***4 idioms containing the word "bamboo shoots":
Bamboo shoots grow in anger in spring. Bamboo shoots grow rapidly and luxuriantly in spring. It is a metaphor that good things happen one after another.
Doubling bamboo shoots and jointing bamboo shoots: pass the "tenon". The tenons and mortises are completely closed and there are no gaps. Describes superb skills.
The slanting bamboo shoots pressed against the stone are a metaphor for the fact that the force of violence cannot suppress the growth of new power.
Bamboo shoots sprout after the rain in spring. A metaphor for things quickly emerging in large numbers.