Constables in the United States
While Constables primarily serve the Courts, they belong to the executive branch of government.
Judicial system of China
The judicial branch is one of three branches of the government, not the state structure, in the People's Republic of China, along with the executive and legislative branches. Strictly speaking, it refers to the activities of the People's Court system. According to the Constitution law of China, China does not adopt the "separation of power" system as in modern democratic countries, the People's court does not enjoy a separate and independent power, but subject to the control of the People's Assembly.