Reporting possible improper use of game clients

in General
I've joined a server only to see this and don't sure about where to report it. Hope the OWI staff will see this too.
Chinese names here are all characters from a sci-fi Three-Body Problem.
Their steam ids are:
76561199305359021
76561199305353163
76561199305333242
76561199305315320
76561199305303843
76561199305296791
76561199305292177
76561199305279171
76561199305245616
76561199305220558
76561199305163926
76561199305091704
76561199305320982
76561199305310191
76561199305354829
76561199305283546
76561199305332877
76561199305175872
76561199305293533
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Comments
What is the problem ? Aren't they allowed to use chinese caracters ?
never heard of "the three body problem", but it seems to be a book. couldnt find any restrictions for that book, so whats the problem with the names? or is it, because they use chinese-characters?