To have powerful privates entities in Imperial China, such as colonial trading compagnies to be able, with enough naval and land forces, to colonise foreign lands, you have to change deeply the culture of the Chinese society. In this culture, the merchant was very low in the social order.
Yes, that was implicit in the OP. For this premise to get off the ground, you need to handwave or at least table some cultural issues to be resolved later.
I don't understand this fascination in this forum for colonisation of America and California. Before 1848, California was very low in everybody minds about being a place to colonise, the Spanish and the Mexicans put very few efforts to send settlers to this land.
Because it pays off in the long run. California and the North American west coast boasts a multitude of natural resources and great climate to boot. San Francisco Bay is the largest natural harbor in the world. There's no shortages of ISOTs where uptimers make a beeline for California because it's prime territory. But true, people in that era had no idea what was in store there. So that's why you're might need people who have nothing else to lose to settle there and stumble upon gold, not unlike in OTL.
Imperial China wil follow the same road of colonisation as the Russian Merchants, if seapower is available, colonise the north-eastern coasts of Asia and control the fur trade here.
I think going along the Aleutian path is a fine alternative, I understand they're not just going to go directly for California, or Hawaii for that matter. A Sino-Russian fur race would make for an interesting scenario, sure. I think
@metalinvader665's post in bringing up fur trappers and hunters of medicinal goods is an interesting idea. Like in Empty America, perhaps Chinese interest in the New World could be for animals for medicinal goods, which will at least bring "
wildcat" hunters. Also it could always become a haven for smugglers and pirates if the Chinese, Spanish, and Japanese push them out of East Asia.
Colonising Taiwan, establishing control of the Ryukyu, fighting the Wako, fighting the Japanese Daïmyo that support them, fighting the Southern China Sea pirates, the Malay pirates, controlling Southern China, something than the Qing never succeed to do completely, colonising Kamchatka and the Aleoutians islands, it is plenty of things to do already.
I do think that it's true that there's a lot of unresolved maritime issues in Asia alone. In fact,
@metalinvader665's post did bring up the issue of Luzon, and makes me wonder if this timeline is going to inevitably lead to conflict between the Chinese and the Spaniards. We also haven't determined which all of the possible sea routes for getting to the New World viable, not sure if the Spanish would be okay with sharing the treasure galleon route.
This entire part is almost ASB because the Chinese don't have the technology, the trained crews, and the cultural capacity to send merchants to the other side of the world.
You don't have something as Chinese international traders, many Chinese flee continental China to escape political persecutions of the Qing against the Han and they established themselves in plenty of countries of South-East Asia but by fleeing their country, they cut ties with it. They flee this country where they were persecuted. This is why many Chinese Diasporas are born from Southern China minorites.
Correct, which is why I found it to be one of the less believable quirks in the timeline, but still rather fun. Probably it's too quirky because it relies on an 18th century start, which is too late and so anachronistic.
I suppose one of the difficulties in getting this premise off the ground is to figure out what social or political changes it takes to force some Chinese to flee all the way east, at least to the Aleuts perhaps, or to New Spain, and then on to the unsettled west coast. But again, that's why in the OP I wanted to ask about logistical possibilities first before figuring out the social pressures. No point in inventing social situations if logistically it's too difficult.