if there's money to be made by a Chinese firm you can bet the Triads will be wetting their beak in it somewhere along the line
Escorts, massage parlours, drugs, fake fags, fake vapes, takeaways/restaurants, protection rackets.....
all and more linked through money laundering chains
One scam I came across today is foreign girls on educational visas registering in the UK for degrees at University "Associate" colleges (effectively subcontracted teaching institutions).....once registered they can apply for student loans, which they draw down then disappear while working in the black economy. Virtually no checks on them one they're registered. You can guess where the loan money goes and how it doesn't get repaid........