To clarify first, the "red-edged green leaves" mentioned by a friend upstairs does not mean all brewed Tieguanyin tea. Tieguanyin has red-edged green leaves during processing (fermentation). Due to the improvement of processing technology, few tea leaves can still see red edges on the soaked tea leaves. The color of the finished Tieguanyin is generally related to the method. Generally speaking, the Tieguanyin being fried is slightly yellow or iron green (less). Even if it is livid, it will gradually turn yellow after several soaking, and most of the tea leaves will be green in the practice of removing green and dragging acid.