A 2,400-meter-deep physics laboratory in Southwest China's Sichuan Province was put into scientific operation on Thursday, making it the deepest and largest underground laboratory globally, Xinhua News Agency reported.

The deep underground and ultra-low radiation background facility designed for frontier physics experiments is located beneath Jinping Mountain in Sichuan's Liangshan Yi Autonomous Prefecture. The facility, with a total room capacity of 330,000 cubic meters, is the second phase of China Jinping Underground Laboratory.

The first grouping of 10 experimental project teams from Tsinghua University, Shanghai Jiao Tong University and Beijing Normal University among others, have settled in and started scientific experiments within the facility.

Li Hongbi, chief engineer of the engineering and technology department said that the facility construction was started in December 2020, and the wind, water and power system of the whole laboratory has been built and put into use, meeting the condition for the experiment groups to settle in.

Scientists believe that the laboratory offers an environment free from interference, which allows them to pursue the invisible substance known as dark matter. They said that the significant depth of the laboratory helps block most cosmic rays that interfere with observation, Xinhua reported.

The facility will become a world-class interdisciplinary deep underground scientific research center integrating multiple disciplines including particle physics, nuclear astrophysics and life sciences, to facilitate the development of China's research in relevant frontier fields, according to the report.

The China Jinping Underground Laboratory was inaugurated in 2010, which is an underground research facility with the deepest rock overburden and largest space by volume in the world. It is located in the Jinping tunnel in Sichuan Province, according to the lab.

For major public health emergencies that result in more than five deaths or critical cases, provincial health authorities must report to China's top health authority within two hours upon receiving the report, according to new medical emergency regulations released by the National Health Commission (NHC) on Monday.

The NHC released the trial regulation to clarify the mechanisms and processes for emergency medical responses to sudden incidents, and to standardize and efficiently carry out emergency medical rescues in order to avoid and reduce casualties and ensure people's safety and health.

When the casualty situation is not clear, the situation should be reported first, with specific casualties submitted later. Health administrative authorities below the provincial level can directly report to the NHC, while copying the higher-level health authorities. The NHC should promptly report to the State Council upon receiving the report, according to the regulation.

The drafting of the trial regulation was based on relevant emergency, medical laws, regulations and contingency plans, including the Emergency Response Law of the People's Republic of China, Basic Healthcare and Health Promotion Law and the national emergency response plan for public health emergencies, said the NHC.

The trial medical emergency regulation was released in a timely manner, providing clear guidance and assistance to medical institutions in dealing with sudden health emergencies, Lu Hongzhou, head of the Third People's Hospital of Shenzhen, told the Global Times on Tuesday.

For example, based on the Law on Prevention and Treatment of Infectious Diseases and other relevant laws and regulations, infectious disease patients should be promptly transferred to designated medical institutions for treatment, Lu said.

The trial regulation standardizes the system of medical emergency information discovery and reporting, as well as the entire process of medical emergency disposal. It clarifies the work responsibilities of relevant departments and institutions.

The health authorities will establish a system for retroactive investigation and accountability in order to strengthen inspection and guidance and improve the timeliness and accuracy of reporting. For those units that report late, omit, lie, or conceal information, they shall be resolutely held accountable in line with relevant regulations.

It also clarifies the standards for on-site medical emergency disposal, injury classification, treatment of the injured and other facets. It stipulates the management of medical emergency teams and base construction, the establishment of a medical emergency expert database, the formulation of medical emergency plans, the reserve of medical supplies, training and drills and other areas as well.

The US and the UK's support for anti-China rioters exposed their ill intention to destabilize the Hong Kong Special Administrative Region (HKSAR), Chinese Foreign Ministry spokesperson Mao Ning said at Friday's regular press briefing, in response to the latest remarks by US and UK politicians regarding the issuing of arrest warrants for five fugitives that have fled the HKSAR to overseas.

China strongly deplores and firmly opposes certain countries' flagrant slandering against the national security law for Hong Kong and interference in the rule of law in the HKSAR, and the issuing of arrest warrants for the five fugitives is in line with international law and common practice, said Mao.

The National Security Department (NSD) of the Hong Kong Police Force said on Thursday that the police have put on the wanted list five individuals who have fled overseas and are suspected of having committed offences under the national security law for Hong Kong.

The five are Cheng Man-kit, Hui Wing-ting, Joey Siu, Fok Ka-chi and Choi Ming-da, according to the HKSAR.

The HKSAR government also on Friday strongly opposed and condemned certain countries' remarks on the issuing of arrest warrants for the five individuals.

The police issued arrest warrants of these five individuals according to the law, which is necessary and legitimate, said Mao. The national security laws of other countries including the US and the UK also have extraterritorial effect. These five individuals, under the pretext of "democracy" and "human rights," have engaged in activities that undermine China's national security, Mao said.

The Commissioner's Office of Chinese Foreign Ministry in HKSAR also expressed strong dissatisfaction and firm opposition on Friday. The spokesperson from the Commissioner's Office said that the extraterritorial application of the national security law for Hong Kong is fully in line with the principles of international law and common practice, and is a necessary and justified measure to ensure Hong Kong's long-term stability and order.

Meanwhile, the 2023 Implementation Rules for Amending the Implementation Rules for Article 43 of the Law of the People's Republic of China on Safeguarding National Security in the Hong Kong Special Administrative Region took effect on Friday.

"The amendments are technical in nature and the scope of the proposed amendments is extremely narrow: it only aims at making clear provisions in respect of the validity period of freezing notice, without changing the basis or principle for issuing such notice," said a spokesperson from HKSAR on Friday.

The amendments can make sure that the freeze notice of property related to offenses under the national security law for Hong Kong remains valid until the legal proceedings conclude, according to the HKSAR.

Lawmaker Elizabeth Quat Pui-fan supports the revision of the implementation rules. The lawmaker told the Global Times on Friday that it can "effectively combat serious crimes that endanger national security."

Anti-China figures are still using various means to deny and evade their crimes that endanger national security. The anti-China forces in the US and the West are eager to continue stirring up trouble and messing up Hong Kong, the lawmaker emphasized.

Authorities are launching a direct strike against anti-China elements and those who disrupt Hong Kong, by pursuing the criminal acts of Jimmy Lai Chee-ying and his peers in accordance with the law and freezing their assets. They have brought this upon themselves and HKSAR is obligated to handle it in accordance with the law, Quat said.

It is necessary to uphold the rule of law in governing HKSAR, using legal means to maintain stability and uphold social justice, the lawmaker said.

Mao, the foreign ministry spokesperson, reiterated that Hong Kong affairs are purely China's internal affairs that brook no interference from any external forces. China maintains firm resolve in safeguarding the nation's sovereignty, security and development interests. Relevant countries should respect China's sovereignty and the rule of law in HKSAR and stop interfering in China's internal affairs, she said.