[内置投诉](%E5%86%85%E7%BD%AE%E6%8A%95%E8%AF%89.md) [购买上限](%E8%B4%AD%E4%B9%B0%E4%B8%8A%E9%99%90.md) [地区限制](%E5%9C%B0%E5%8C%BA%E9%99%90%E5%88%B6.md) [背景音乐](%E8%83%8C%E6%99%AF%E9%9F%B3%E4%B9%90.md)