Thank you for your reply.
I have read several of the posts you mentioned Network: i/o timeout - Server operators - NTP Pool Project, CN pool collapse a few hours every day - Server operators - NTP Pool Projectand I have a general understanding of the issue.
In fact, some large internet companies (such as Alibaba Cloud, Tencent Cloud) or the China National Time Service Center, etc., provide NTP services. Unfortunately, in China, there are a large number of smart devices (possibly in the hundreds of millions!) that come with the default NTP server set to pool.ntp.org. The NTP servers of large internet companies, due to their low scores, cannot join the pool to share the traffic load. As a result, only a few hundred servers are available in the China region, which have to handle the majority of the country’s NTP requests. This is undoubtedly a daunting situation.
Based on this, is there a place where I can submit an application to the administrators: to include some of the NTP servers from large enterprises in the pool permanently (not to be removed due to low scores), so that small servers like mine can handle only minor requests?
P.S.: In China, the cost of commercial bandwidth is very expensive. For example, with Alibaba Cloud, a 10 Mbps dedicated IP costs ¥525 (about $73) per month, and 100 Mbps bandwidth costs ¥7,725 ($1,084). It is almost impossible for individuals to bear such high bandwidth costs.