Lucius Verus
Banned
The Chinese imported tons of things besides silver and opium, including jade (from Central Asia). This did not result in any European settler colonies to farm rice (in high demand in the developed regions of China) or birds’ nest.
As with all things its a matter of relative demand, the Spanish settled/conquered numerous colonies for their silver exports, various kingdoms conquered/settled the East Indies for their spices among others, jade was valuable and the sources of it concentrated enough with an insatiable demand among Chinese nobles, merchants, and bureaucrats.
The question was how, for existing plantations secrecy wasn't a concern and there was an existing local labour pool. For Taiwan the natives were relatively sparse and it seems foolish to hire Chinese labourers that will inevitably reveal its presence to the mainland.