@svub FYI: First, I have tested Nimiq Safe and Cashlinks with five members of Chinese community (my seed node was shutdown in that period). The result is pretty positive. It takes a bit time to download resources(js, css, etc.) since there is no CDN in Mainland China, but it’s still not that bad. Even the time for searching peers and syncing blockchain data is not long.
In conclusion, it seems that the situation I mentioned above is not consistent. It was that bad when I posted this article, almost everyone without VPN complains about it, but now it’s good.
Sometimes the connectivity is very bad between North American and China, same thing with Europe and some of seed nodes could be probably blocked by the Great wall as well.
I am going to keep an eye on this for further investigation. In the mean while, I am still running the seed node to know what it costs in a week. I just wonder if you/team are still interested to have a seed node in Mainland. It seems to be much less than I expected before. It probably costs under $25USD/month in total.