Laura Robson was among the marquee players winning their openers on Day 1.
Marion Bartoli, seeded No.2 in Shenzhen, also won her opening match that day.
Duan Ying-Ying defeated Kimiko Date-Krumm in a tight two-setter first round.
Julia Cohen saved three match points to survive Nina Bratchikova first round.
Peng Shuai, China's second-highest ranked player ever, rolled in her opener.
Marion Bartoli signed autographs after blazing through her second round, 61 60.
Elina Svitolina, one of the WTA's rising stars, had a tough second rounder.
Czech veteran Klara Zakopalova was too tough, beating Elina Svitolina, 64 63.
Monica Niculescu put an end to Laura Robson's week in the second round, 62 63.
Chinese trailblazer Li Na blazed through her first few rounds in Shenzhen.
Li Na reached the semifinals without losing a set - 64 60, 63 64 and 63 63.
Meanwhile, Peng Shuai saved match point to beat Annika Beck in the quarters.
The practice courts have also been a popular place for spectators in Shenzhen.
Fans packed the stands at a practice court at 5pm on the Tuesday afternoon.
The Longgang Tennis Center has 32 courts, including a 4,000-seat Stadium court.