多点妙招[多點妙招]-只需一根回形針(迴紋針)就可以讓背包更加安全？原來是這麼做的，太實用了

資料來源: https://www.weibo.com/u/6515181863?refer_flag=1005055013_&is_all=1

http://k.sina.com.cn/article_6515181863_v18455c92700100dtib.html

GITHUB完整收藏:https://github.com/jash-git/Jash-good-idea-20181012-001

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PS 這方法只防不割破包包的(有良心的小偷)