What does it mean that there is something hidden in Emperor Taizong's "Hundred Words Inscription"?

Lack of desire is refreshing, and excessive thinking is qi and blood failure. Drink less, don't mess around, and swallow it, so as not to hurt your money.

Expensive comes from diligence, and rich comes from thrift. Tenderness will eventually benefit you, but violence will suffer.

Good is a true gentleman, and evil is a curse. Don't shoot an arrow in the dark, but stay in the dark.

I think the main idea is, don't be sharp-edged, don't look too deeply, stupidity is a blessing, and don't haggle over every ounce.