The recording for kǎ (卡) is that of kāi (开). Then the recording for zhú (竹) and máo (毛) is that of bǐ (笔).
Writing Lesson 10.9 recording errors
December 13, 2014
January 31, 2015
I checked to see if this had been fixed and no, it has not. This is a minor annoyance.
February 2, 2015
Robert, 你好！ Would you be able to provide the lessons in which these mistakes appear and I will go ahead and make any necessary alterations. Thank you in advance and 加油！ - Lin Ping