The principle is this: in the old district, the number is liwei 1, and the name of the character is lka. The second one is liwei's name is lka, and the third one is the same, except that an A is added after the character, and the same number is added in the new district. For example, in the old district, the number is liwei 1, the character name is LKA, the second one is liwei's character name is LKA, and the third one is the same, except that an A is added after the character.

That is, after building such a number, I will trade the equipment samples to such a number, stand in the safe area 1 hour, and then trade things to others, so that I can copy them.

The reason is a vulnerability in the server engine. As long as you use this engine, this bug will always exist. Brush it quickly before the author corrects it.