HSK 6
Qǐyìjūn zài yèjiān fādòng le tūxí, zhànlǐng le chéngmén.
The rebel army launched a surprise attack at night and seized the city gate.
HSK 7-9
Lìshǐ shang, xǔduō qǐyìjūn zuìzhōng tuīfān le fǔbài de wángcháo.
Throughout history, many rebel armies eventually overthrew corrupt dynasties.