Dear students, the update speed has been a bit slow recently, and it stands to reason that the new book should be updated daily, and the author would like to express his sincere apologies.

Due to the recent period of time, the author Jun is preparing the materials for Shenbo, while gnawing on the Guangxiang theory course of Beijing Normal University, and at the same time discussing the setting of field equations and gauges with the fisherman next door (a novice fisherman, the author of "Into the Unscientific"), so I apologize again for delaying the speed of the codeword.

P.S. has an update today.

"Defending Nanshan Park" apologizes is being hit by hand, please wait for a while,

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