Luo Dajing, a scholar in the Southern Song Dynasty, he Lu
A drop of water can penetrate a stone, and everything will follow.
A drop of water will never dry up unless it melts into the sea.
In life, a drop of water represents an ocean, and only one drop of water is needed to interpret this ocean of life.
A drop of water will repay a spring.
Save a drop of water today and leave a drop of blood for future generations.
The last drop of water of mankind will be the tears of regret after environmental destruction.