MICHAEL CHANG, looking trimmer and grown up, arrived in Hong Kong yesterday to defend his Salem Open tennis title and give his army of fans their annual dose of close-up doting. Chang, although still only 23, is a seasoned pro, not only on the court but in coping with the chaos that erupts whenever he lands in the territory. The media corps and a handful of fans were out in force at the Marriott hotel yesterday to greet the world No 6. But instead of the former teenage boyish looks, they were surprised to see a leaner, more business-like cut of a mature superstar. Shepherded by his manager and brother-coach Carl, Chang, who has been coming to Hong Kong since 1988, calmly walked to the lift lobby and to his room for some hard-earned rest. Despite losing to Jim Courier in the semi-finals of the Japan Open on Saturday, Chang is happy with his form going into this week's tournament at Victoria Park. Such is his determination to do well in the territory that Chang was said to have asked local organisers, prior to his arrival in Hong Kong, to keep his off-court commitments to a minimum. He is, however, ever-willing to help out youngsters. And that is what he will be doing this afternoon at the South China Tennis Club in Kowloon when he conducts a coaching clinic for some of Hong Kong's brightest juniors. In past years, Chang's Hong Kong trips have been full of off-court projects, including appearing in shampoo commercials and filming for the television series, Michael Chang's World of Tennis. Hong Kong is Chang's second home, both spiritually and financially. The territory is where many of Chang's business and endorsement deals are signed. And his television show commands the prime 7.45 pm slot on TVB Pearl's Saturday night schedule. It was reported that in one year, Chang made around US$10 million (HK$77.24 million) through his involvement in Asia, particularly Hong Kong. He is sponsored by Reebok and STAR TV and commands an appearance fee of between US$150,000 and US$200,000. If previous visits are anything to go by Chang is set to cause quite a stir. Several years ago adoring teenaged female fans toppled a barrier, and a couple of security men, at Victoria Park in an attempt to get Chang's autograph.