In 1888, he went to Hong Kong and stayed at Yeung Yiu Kee (楊耀記), his family shop on Gough Street, Sheung Wan.

In 1890, Yeung introduced Yau Lit, his classmate at the Canton Academy of Mathematics, to Sun Yat-sen, his old friend from Cuiheng.

The four frequently met at Yeung Yiu Kee to discuss a revolution against the Qing Dynasty, and were collectively called the Four Bandits by their neighbours.

Sun was soon forced to leave Macao to redevelop his medical career in Shekkei, Heungshan, and Yeung sold a building in Rua Central to support him.

In 1923 Sun re-established the Canton Government and appointed Yeung as the special investigator in Hong Kong and Macau.