In 1983, Cheng was lured by the chairwoman of Sing Tao Holdings, Sally Aw Sian, to return to Hong Kong to spearhead the Group's advertising, marketing and business development initiatives.

Cheng is a co-founder of this multi-sectorial umbrella civil body to back the Chinese students' demand for democracy and a clean government.

The peaceful demonstrations in Tiananmen Square ended in a bloody military crackdown, which shook Hong Kong and the world.

In 1994, Cheng co-hosted the ground-breaking political talk show "News Tease" on Asia Television which set the trend of current affairs commentary programmes in the local electronic media.

A year later, he left Paramount Publishing Group and Capital Communications to become a full-time host of Commercial Radio's breakfast talk-back show Teacup in a Storm.

In addition despite his absence from Canada, Cheng has doubled up as a commentator for Overseas Chinese Voice (AM 1320 CHMB), a multicultural radio station in Vancouver.

[1] In print, Cheng had been a columnist for the Ming Pao Weekly, Hong Kong Economic Journal and South China Morning Post since 1999.

He was struck on his back, arms and right leg for a total of six times, leaving deep wounds up to 22 cm long.

He was brought to intensive care where he underwent four and a half hours of surgery to reattach his broken bones, flesh and nerves.

[2] The attack shocked Hong Kong society and raised concerns about freedom of speech in the former British colony, one year after the handover to China at the time.

Despite his vast popularity, Cheng's contract with Commercial Radio was terminated abruptly and unilaterally in 2004 as the station buckled under political pressure in the run-up to the renewal of its broadcasting license.

He won a seat in the Legislative Council[4] and tackled vital issues such as the opening up of the public airwaves, imposing tighter tobacco control, introducing food labelling, and regulating against unscrupulous practices in the sales of residential flats.

In 2008, Cheng announced that he would not seek re-election to Legco to avoid possible conflict of interests in his efforts to apply for a license to operate a radio station.

Cheng is a voting member of the Hong Kong Jockey Club, the first Asian charity donor to be listed in the world's top 10.

Law (GBS, JP), and a group of individuals, in response to a prolonged cold spell during which more than one hundred elderly living alone were found dead.

The association is a self-financing social enterprise and charitable organization in Hong Kong that offers 24-hour personal caring and emergency assistance services to the elderly and others.

Cheng acts as Asia adviser to the Provost and responsible for establishing the Greater China Scholarship of the University of Notre Dame.

[citation needed] Cheng married the Cantopop diva Paula Tsui in Canada in 1974, but that marriage ended in divorce five years later.