Within 10, the number of official reception escorts shall not exceed 3; 10 or more, shall not exceed one third of the number of reception objects. Home cooking should be provided for working meals, and high-grade dishes such as shark's fin and bird's nest and dishes made with wild protected animals should not be provided, and they should not be in private clubs or high-consumption dining places. Official business refers to the affairs and responsibilities involving the state or the collective. Official duties can be narrow or wide. In a narrow sense, official business mainly refers to the daily work of state organs, such as administration, legislation, trial and procuratorial work. Broadly speaking, official business includes the daily work of party and government organs at all levels, state-owned enterprises, institutions and mass organizations, covering government administrative affairs, legislative affairs, judicial affairs and procuratorial affairs. The characteristics of official business include publicity, national will, legitimacy, superiority and compulsion. It is usually carried out by state civil servants who manage society on behalf of state administrative organs.