Gu and her regular partner Ge Fei were the world's dominant women's doubles team from the mid-1990s to their retirement after the 2000 Olympics.

They won over thirty top tier international tournaments together, including two Olympic competitions and two IBF World Championships (which were then held biennially).

They won the gold medal by beating Gil Young-ah and Jang Hye-ock of South Korea 15–5, 15–5 in the final match.

Gu and Ge successfully defended their women's doubles title in the Sydney 2000 Olympics.

They won by the same score as 1996, this time against their compatriots Huang Nanyan and Yang Wei.