https://wiki.open.qq.com/wiki/技术优化原则#1._.E7.A8.8B.E5.BA.8F.E8.AE.BE.E8.AE.A1.E6.97.B6.E9.9C.80.E8.A6.81.E8.80.83.E8.99.91.E7.9A.84.E4.BA.8B.E9.A1.B9
