Although it requires 2 contributors (rep $\geq2000$) to reject an edit, it only needs 1 by "rejecting and editing" actually. And later, I found this problem have been came up before.
Today I found some of my edits were rejected singlehandedly by "rejecting and editing" trivially, it's not they're rejected but they're not treated seriously that makes me disappointed. Edit 1-4 were rejected by the same user.
Edit 1: I added a link to the book mentioned in question, but it was rejected and edited trivially. See Revision 4.
Edit 2: This question was not clear enough so I improved expression and retag. Same result, see Revision 3.
Edit 3: I added 2 more popular tags. Same result again, see Revision 4.
Edit 4: This question is more about complex analysis and pde rather than mathematical-physics so I retagged, same result as before. See Revision 2.
Edit 5: This question is about computing characterisctic class and not so relevant to string theory, so I added mathematical-physics and characteristic-classes, delete string-theory, but it was rejected and even wrongly edited. Calculate characterisctic class is apparently not a part of elementary physics and shouldn't tagged physics.
Edit 5 is partly my fault, since it does have strong background in string-theory, deleting it is not a good choice.
What can be done about this?
Any suggestions and opinions? Thank you for your kindly discussion.