[3.1公众号内推广](3.1%E5%85%AC%E4%BC%97%E5%8F%B7%E5%86%85%E6%8E%A8%E5%B9%BF.md) [3.2通用推广](3.2%E9%80%9A%E7%94%A8%E6%8E%A8%E5%B9%BF.md)