Less than two years after turning professional, China's golden boy, Zou Shiming , will have the opportunity to enter the path of true greatness by challenging undefeated Thai Amnat Ruenroeng for his International Boxing Federation (IBF) world flyweight title in Macau in March. Zou, the two-time Olympic champion who turned pro in January last year, will renew his rivalry with the Thai, whom he beat in two out of three meetings as an amateur, including a semi-final victory at their last encounter on his way to gold at the 2010 Asian Games. Now that he's a world champion, he's definitely getting stronger, but I'm improving as well Zou Shiming "When we were fighting as amateurs, I think we were at the same level, in terms of strength," said Zou. "Now that he's a world champion, he's definitely getting stronger, but I'm improving as well. One thing for sure is that the fight will be absolutely captivating," said the 33-year-old Zou. Amnat (14-0, 5 KOs), who won the IBF crown in January, started his amateur trilogy against Zou by winning the first fight at the 2007 King's Cup. But Zou won the next two fights and they will cross paths again for the first time as professionals in the Showdown at Sands on March 7 at the Venetian Macao Cotai Arena. Zou (6-0, 1 KO), who is also a three-time amateur world flyweight champion, defeated number three contender Kwanpichit Onesongchaigym of Thailand by unanimous decision in a world flyweight title elimination bout on the undercard of November's Clash in Cotai II, which featured Manny Pacquiao. READ MORE: For all the latest Zou Shiming news click here Zou suffered a badly bruised left eye after an accidental clash of heads but has recovered. Zou and Amnat have vastly different backgrounds with Zou considered one of the greatest amateur flyweights of all time with three Olympic medals.. Amnat has a troubled past, beating drug addition and enduring three prison terms before finding salvation through a prison boxing programme that saw him become a national amateur champion while still an inmate. He went on to win bronze at the 2007 world amateur championships in Chicago before making his professional debut in 2012.