China is just getting started installing what will very soon be over a million 5G cells. They will use frequencies from 2.5 to 4.9 GHz and deliver typical speeds of 100-400 megabits. What apparently is undecided is whether they will aim for ~30 ms (Verizon), 15-25 ms (Deutsche Telecom), or 10-15 ms?
30 ms is the least expensive, achievable by replacing older LTE with brand new 5G NR. That saves 35% to 45% from older systems most common in the U.S. That can be reduced by to 15-25 ms by installing edge servers and/or reducing the number of routers. (Verizon intends both.)
No one in the west has announced plans to go to every tower, which would require about 10X the number of servers. Highly respected Minister Miao Wei and Xi Jinping have hinted China might do so, and later cut the latency in half when URLLC is ready. Nothing is clear, especially because I have to read in Google translation.