Investigation: Mainland College Students Seeking Part time Jobs and Being Exploited by Black Industry to launder virtual currency in Hong Kong "by Bitrace& Mankun, a mainland Chinese university student, received a part-time job on an idle second-hand goods trading platform. He was required to use his personal bank card to collect RMB and exchange it for HKD cash at a Hong Kong fiat currency exchange shop. He then went to a designated cryptocurrency exchange shop in Hong Kong to purchase USDT and had the shop directly transfer it to a designated wallet.