Pronounced xu wo qie in "Guangyun" and xu wo qie in "Jiyun", same pronunciation as "he". "Boyan" explains: xi xi ka ka, meaning to laugh. Sometimes also written as "ha". Also, pronounced hu ge qie in "Guangyun" and xu ge qie in "Jiyun", pronounced with a falling tone, same as "he". The meaning is the same. Also, pronounced hu he qie in "Jiyun", same pronunciation as "he". The meaning is the same. Another explanation is breathing out. It is interchangeable with "he". Also, pronounced ku jia qie in "Guangyun" and qiu jia qie in "Jiyun", same pronunciation as "ge". "Boyan" explains it as panting. Another explanation is to laugh heartily. Also, pronounced qi ye qie in "Jiyun". Meaning to open one's mouth and pant. In the Guanzhong region, to lie down temporarily is called "ka". Another explanation is "ka ka", meaning unexpectedly.