I built a group.,If you're interested, you can add it.,The main thing is that the author doesn't know much about some things.,It's better if you have a big hand in science popularization and can join the group.。

Welcome to join my group members are the big guy's brick-moving group, group chat number: 706062279

"My group members are big guys" has built a group and is playing in hand, please wait a while,

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