Gong became a trader of electronic goods in Southern China (Guangzhou and British Hong Kong) after his graduation. He emigrated to Hong Kong in 1992, 5 years before the handover of the colony to China. He formerly owned radio manufacturer Tecsun (now known as Tecsun Science & Technology) and smart card company Watchdata. In 2001, he co-invested in Hikvision for 49% stake. However, after Hikvision became a listed company, he sold part of the shares he owned. In 2017, his disposal of shares in that year, making him a sudden rise in the billionaire rank by Hurun Report [de].
