New Delhi, Sept. 2 -- Hong Kong's pro-democracy activist Joshua Wong on Wednesday pleaded guilty in a case in which he was accused to have colluded with foreign forces in order to endanger national security.

The case against him was filed under a law imposed by Beijing which has choked the pro-democracy movement of Hong Kong.

Wong, a pro-democracy activist, was serving a prison term of four years and eight months when this second conviction was announced.

While some critics say that his second conviction shows that Beijing is clamping down on dissidents in order to quash their activism, the Chinese government considers Wong and other dissenters like him anti-China figures who support independence for Hong Kong.

Wong was accused of con...