Are you sure it's not Khumbutse?
Guangming seems to be a 1860m peak in eastern china.
"There are other Guangmings in the lives of men" - Morris Hedgehog
Khumbutse according to a map posted earlier is 6665ft,
Or, 6665m perhaps?
so it should be visible.
Mountains rarely do what they should. But yes, I too thought Khumbutse would be visible, but it's not, because...
...this Guangming peak is right in front of it and it hides it nicely.
Yes, it does.
Khumbutse and Lingtren are better known names as they are visible from Nepal and were known by those names at least as far back as the 1930s. I think Guangming may be a newer name from the Chinese. Some other peaks in the area were re-named by the Chinese after the 1950s.
Guangming Peak is well marked on the Lhanzou Institute Chinese map of the area (one of the better maps around) though the altitude is 6485, whereas on the excellent Bradford Washburn / NG map it is 6533m, and also marked as Guangming Peak.