Zou Shiming of China has won back-to-back gold medals in the Olympic Games. But he’s 32 and has just one professional bout, so time is of the essence for him.

Shiming made his pro debut April 6 with a unanimous decision over Eleazar Valenzuela at Venetian Casino & Resort in Macau, China. Shiming will be back there July 27 when he takes on Jesus Ortega (3-1, 2 KOs) of Mexico in a six-round flyweight bout that will act as the main event on a card that features two world-title bouts (on HBO).

Shiming is promoted by Top Rank Inc. and trained by Freddie Roach, who this week talked about what he wants to see from Shiming.

“I was very pleased with how quickly Shiming learned what I was teaching during our first training camp and he is the hardest worker in the gym,” said Roach, who owns the Wild Card gym in Hollywood. “This time our main focus will be on getting him to punch harder. Shiming will need to learn how to sit down on his punches to maximize their power.”