At first, it will probably work. But you will likely lose access after a few days and your servers will be scanned for exploits, so make sure your shit it up to date.

Source: hosted an XMPP server which was summarily banned after 2 days of access from China and then probed/attacked repeatedly until I took it offline.

Don't make any connection to your home server, period.

Bringing non-disposable technology to China is a mistake in most circumstances.

Maybe it is possible, maybe not. GFW may interfere with zerotier connections.

If that doesn't work, you can consider using Alibaba Cloud's HK server for transit.

Generally speaking, if you come to China for work or pleasure like ishowspeed, there is basically no risk. I wish you a pleasant trip to China.

I would not try to access a server from China. Can't you let someone else take care of the machine in the meantime? It's always a good idea to have some backup admin just in case.

Mobile roaming worked but not while connected to hotel Wi-Fi. I also got a VPN before I went to China, routed through Japan. It was slow as shit.

I wouldn't access anything nor would I take any tech with you.

Don't risk it

It depends. Very much. And this is the main problem: There isn't "one" solution, you will need a few.

The thing with the PRC is: Their great firewall isn't "one big uniform block". It's fairly "variable".

For example: In Beijing,even 10 years ago, I could access google maps and Facebook without any issues(back then highly blocked) as long as my mobile phone was roaming. The second I was on wifi of course it was blocked. But even the cheapo VPN my colleague had did work out fine. Until the day the police started to prepare for the party convention - then suddenly my colleague couldn't get out, neither could I with our company wifi and even my carefully crafted wire guard over HTTPs didn't work - unless I was in the wifi of the hotel or our host company. There it did. Party congress over? Back to normal operations.

If you travel through the country you will find that in one place solution A works, in another solution B. Generally the more rural (or closer to Tibet/Xinjiang/Myanmar) you get, the more restrictive it seems to be.

Personally I would simply get there different commercial VPNs to make sure you have a choice to get out at all - there are various ones with a good PRC reputation. Most providers have trials as well. And then double tunnel through that if you can't directly reach your usual VPN at home

tailscale worked some times, but seemed to depend on the location of the moon relative to the air speed of a nearby sparrow and it was really slow.

Look into shadowsocks, or just normal vpn.

Pandafan was quite reliable for me. You might also be able to diy with hk, sg or sk vps instances, but it was a lot of work and a misconfiguration will cut you off.

What you’re asking is illegal where you’re going

Best of luck to you

People posting here don't realize that CN gov IDs and allows certain traffic to get rerouted through a certain VLAN so they can do DPI and record every packet through a beefy expensive tap device to analyze the telemetry later, and potentially build a case against you. If they so choose. And they likely have the capability to trivially decrypt TLS.

Don't bring in any tech, don't access your personal net back home, don't expect any level of actual privacy or good intentions. Just do your business and keep your digital digital persona minimal while there.

As another user posted, how strict the firewall is depends on where you are (and if there are any special events). I heard that Wireguard doesn't work because of deep packet inspeciton, but I was able to use Tailscale to my home network without problems when I was there last year. I also set up a xray vless-reality proxy on a VPS and Outline servers on Google cloud and those worked too.

But the easiest method is to buy an HK eSIM for roaming (I used 3HK). I bought a month of LetsVPN but they booted me from the service for some random reason, so I changed to Mullvad which also worked too.

From what I've read if you use a VPN it's pretty simple to get past the great firewall of china. It's also only technically illegal, and not really punished.