Zhang Zhong finished second at the
World Junior Chess Championship twice, in 1996 and 1998. He won the
Chinese Chess Championship in 2001 and 2003. In 2002 he scored 8.5/12 points at the
35th Chess Olympiad in
Bled and won the 7th World University Chess Championship in
Ulaanbaatar. Zhang Zhong was clear first with a score of 11/13 at the
Corus B tournament in
Wijk aan Zee in 2003, three points ahead of his nearest rival. This result qualified him for the prestigious main Corus A tournament in 2004, in which he scored 5/13. He won the 2005
Asian Chess Championship to qualify for the
FIDE World Cup held that year, where he beat
Mikhail Kobalia in the first round, but lost to
Ivan Sokolov in the second. In 2007 he
transferred national federations to represent Singapore. In 2008, he won
ASEAN Chess Circuit Tournament in
Tarakan. In 2014, he tied for 1st–3rd with
Nguyễn Ngọc Trường Sơn and
Lê Quang Liêm, placing second on tiebreak, at the 4th HDBank Cup in
Ho Chi Minh City, and won the 11th IGB
Dato' Athur Tan Malaysia Open in
Kuala Lumpur. In 2017 Zhang moved back to the Chinese federation. ==China Chess League==