Joshua Wong, 29, pleaded guilty to a foreign-collusion charge at Hong Kong's High Court on Wednesday.
Prosecutors accuse him of working with exiled activist Nathan Law to lobby foreign powers for sanctions, blockades and other hostile measures against China.
Wong is already serving four years and eight months for subversion and had been due for release in January 2027, but the new case could result in another sentence of up to life imprisonment in a grave case.

