A flag-raising ceremony is held at the Ministry of Public Security in Beijing, capital of China, Jan. 10, 2024. China marked its fourth national police day on Wednesday. (Xinhua/Yin Gang)

A flag-raising ceremony is held at the Ministry of Public Security in Beijing, capital of China, Jan. 10, 2024. China marked its fourth national police day on Wednesday. (Xinhua/Yin Gang)

A flag-raising ceremony is held at the Ministry of Public Security in Beijing, capital of China, Jan. 10, 2024. China marked its fourth national police day on Wednesday. (Xinhua/Yin Gang)

Police officers take part in a flag-raising ceremony at the Ministry of Public Security in Beijing, capital of China, Jan. 10, 2024. China marked its fourth national police day on Wednesday. (Xinhua/Yin Gang)

Police officers take part in a flag-raising ceremony at the Ministry of Public Security in Beijing, capital of China, Jan. 10, 2024. China marked its fourth national police day on Wednesday. (Xinhua/Yin Gang)

A flag-raising ceremony is held at the Ministry of Public Security in Beijing, capital of China, Jan. 10, 2024. China marked its fourth national police day on Wednesday. (Xinhua/Yin Gang)

Police officers take part in a flag-raising ceremony at the Ministry of Public Security in Beijing, capital of China, Jan. 10, 2024. China marked its fourth national police day on Wednesday. (Xinhua/Yin Gang)