The company completed three other landmarks in Hong Kong between 1996-97, Lippo Tower, with its cruciform skyscraper plan, Citic Tower, with its distinctive triangular plan and rounded corners, and Central Tower, with its extended hexagonal floorplate. This theme led to two other buildings in 1997, City Tower and No.8 Wyndham Street, both of which have similar elliptical floor plans. In 1999, the company saw the completion of the Olympic Station Development in West Kowloon along the new Lantau Airport Railway.
In the 1990s, much of the focus shifted again to China, particularly Shanghai, where the office expanded to 200 people and helped to produce 20 major commercial buildings for Hong Kong and Singapore clients. Completed in 1999, Oriental Plaza in Beijing is a landmark development for contemporary China.
The practice also saw the completion of the Bank of China building, and the Tai Fung Bank, Macau in 1997, the Harbour Ring Plaza, Shanghai in 1998 and Citic Square, Shanghai in 1998.
In Taiwan, the practice completed the Taipei Metro in 1994, a large mixed use complex that includes the headquarters of the Far Eastern Group, the 5-star Shangri-La Hotel, and the Galleria shopping mall.
The Singapore office continued to add to the company's commercial portfolio with AIA Tower, Phoenix Tower, and Reuters Computer Centre Building, all completed in 1993.
High-rise residential developments continued to be an area of strength for the company, starting with the development of Hong Kong's first duplex residential tower in the late 70s, the May Tower. The 1980s and 90s saw the completion of several luxury apartment developments in Hong Kong, including Queen's Garden and Pacific View, thus building on earlier achievements.
The P&T Group continued to be involved in high density low-cost public housing in Hong Kong, such as Hing Man Estate in Chai Wan, Clague Gardens Estate at Tsuen Wan and various other low cost estates for the Government. In Singapore, the practice won the first public housing award for design-and-build for Tampines Neighbourhood 4 which was completed in 1994.
Following on from the earlier work of the firm, in the 1990s the Hong Kong office added three more new campuses to their portfolio. The mechanistic character of the new Hong Kong Technical College in Tsing Yi in 1993 reflected the subjects taught, while a more classical Chinese theme was used for the campus for Lingnan College at Tuen Mun completed in 1997. The campus for the Institute of Education in Tai Po rounded off the century for the firm.
The Singapore office completed the Tampines Junior College in 1986, followed by the SIM Management House in 1988. In the 1990's the increasing expectations for international education were met by the Chinese International School in 1991, the Singapore International School in 1996, and the Canadian International School in 1999.
The year 1997 marked the return of sovereignty over Hong Kong to the People's Republic of China. In the next five years, the economies of the Asia-Pacific region were hit by four calamities in rapid succession. In 1997, the Asian financial crisis erupted with adverse effects on Thailand, Indonesia, and to a lesser extent, Malaysia and South Korea. Even Hong Kong and Singapore were not spared.