Chou Collection, Upper Volume Radical: Mouth (kǒu) Character: tan Kangxi stroke count: 19 Page 213, Entry 31 Collected Rhymes (Jiyun): Pronounced lan (rising tone). Same as tan. See the note on the character tan previously. Also pronounced lan (falling tone). Same as dan. See the note on the character chan previously. Records of the Grand Historian (Shiji), Biography of Yue Yi: Order Zhao to tan Qin regarding the benefits of attacking Qi. Note: Tan means to offer advice.