EXECUTIVE Councillor Edward Chen Kwan-yiu told graduates of Queen's College Old Boys' Association Secondary School that Hong Kong was facing an unprecedented age of certainty and prosperity and they would enjoy a promising future after 1997. ''People always say Hong Kong is a borrowed land. But, in three-and-a-half years, we will know our future as we are reunited with China and adopt the Basic Law,'' said Professor Chen, who was invited to address the school's fifth speech day. He believed the present disputes were only minor disagreements over technical issues and that Hong Kong would probably remain unchanged for another 50 years. ''As you look at the soaring stock market right now, you can see investors are full of confidence in Hong Kong's future,'' he said. He also said Hong Kong would benefit the most as China's economic development went from strength to strength. ''We are poised to enter the century of the Pacific as the world economic centre shifts from the Atlantic to the Pacific. '' Professor Chen also said that, in terms of purchasing power, China was now second only to the US. In the 21st century, China would enjoy huge, international economic influence. As China's political situation improveds, those 200,000 or so Chinese now overseas would return to their homeland, bringing new skills with them. In addition to the backing of an increasingly-prosperous China, Professor Chen said he believed Hong Kong had an adequate economic base to support future growth. Therefore, Hong Kong people would not face the age of uncertainty but prosperity and opportunity. Professor Chen also reminded graduates to exert themselves and to remember the five ''I''s - independence, inquisitiveness, initiative, innovation and integrity. ''Queen's College embodies the spirit of independence. However, this alone is not enough, you also need curiosity to keep seeking out knowledge,'' he said. ''Have initiative and be innovative as ways to success, but safeguard your integrity as thus you can be an all-round student.'' A total of 51 Form Seven students and 150 Form Five students received their graduation certificates.