Marcel Petrov, known as Wang Hanlong (Chinese: 王汉龙; born 20 March 2006) in China, is a professional footballer who plays as a forward for Shanghai Shenhua.
Petrov was born on 20 March 2006 in Yiwu, Zhejiang, China.
Born to a Slovenian father and a Chinese mother, he started playing football at the age of six.
Subsequently, he joined the youth academy of Slovenian side Olimpija, where he was the second top scorer of the under-15 league during the 2020–21 season.
Sohu wrote in 2025 that "his physical fitness and shooting skills were impressive [while training with Shanghai Shenhua]".