Related Rule
China
Practice Relating to Rule 28. Medical Units
China’s Law Governing the Trial of War Criminals (1946) provides that “deliberate bombing of hospitals” constitutes a war crime. 
China, Law Governing the Trial of War Criminals, 1946, Article 3(10).
At the International Conference of the Red Cross in 1952, China denounced the bombardment of hospitals during the Korean War. 
China, Statement of 30 July 1952 at the 18th International Conference of the Red Cross, Toronto, 26 July,7 August 1952, reprinted in Documents on Foreign Affairs of the People’s Republic of China, World Knowledge Press, Beijing, Vol. 2, pp. 82–83.
In 1972, in a statement before the General Conference of UNESCO concerning US attacks in Viet Nam, China criticized the United States because it allegedly had “wantonly bombarded Vietnamese cities and villages, seriously destroyed many schools and cultural and sanitary facilities, [and] killed a large number of teachers, students, patients and medical personnel”. 
China, Statement before the General Conference of UNESCO, 25 October 1972, Selected Documents of the Chinese Delegation to the United Nations, The People’s Press, Beijing, 1972, p. 239.
The Report on the Practice of China states: “China is of the opinion that … medical objects shall be respected and protected from attacks.” 
Report on the Practice of China, 1997, Chapter 2.7.