The almanac is not suitable for breaking ground.

Not suitable for breaking ground: it means that the surface layer of soil cannot be broken in and around the foundation of a house, so breaking ground is also called breaking ground, which involves a wide range of contents, such as building a house, ditching, digging a pit, starting a stove and lifting a kang. In short, it includes projects with damaged soil layers. Installing solar water heaters and punching holes in the wall are not groundbreaking. But don't commit "red sand".

Supplementary answer: The so-called "red sand" is a murderous look. Anyone who goes out, marches, fights, works at height, etc. It is not allowed to commit "red sand", so everything that is "already in the sun" in May is red sand.