Apex domains cannot have CNAME records.
Question and response
Question
dig anlai.com. NS
Answer
anlai.com. 2 NS dns29.hichina.com.
anlai.com. 2 NS dns30.hichina.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0