Is Kantu a map?

Yes

The Kanyu map is a map depicting the relationship between the Feng Shui geographical conditions and planning layout of tombs, residences and city sites.

Kan means the way of heaven; Kanyu means Feng Shui, which is one of the traditional Chinese cultures. "Historical Records" juxtaposes the Feng Shui family with the Five Elements family. Originally, it meant looking up at the sky and looking down at the geography. Later generations specifically called it Feng Shui Family, so Feng Shui is also called Feng Shui among Chinese people. However, it can be said that "Feng Shui" is not just Feng Shui, but should be divided into five parts, namely Luo Luo, Japanese class, Xuan Kong sect, mourning method and expert.