old system; old order
Refers to a previous institutional framework, set of rules, or social order, often in contrast with a new or reformed system.
Under the old system, such applications were not accepted.
旧体制 emphasizes the overall governing structure or regime, whereas 旧制度 focuses more narrowly on the old laws, rules, or institutional arrangements.
Compound of 旧 (old) and 制度 (system, institution).