鳳凰涅磐 is a proverb that suggests “Legendary Phoenix rises from the ashes.” It means “Legendary Phoenix [reaches] Nirvana.”

There is a legend in China of a great bird reborn once every 500 years. This bird gathers all the ill will, suffering, desire, and other negative things of the world. The bird then plunges into the fire to burn away all negative things, sacrificing itself in the process (achieving Nirvana, or perhaps allowing others the opportunity to reach Nirvana).

500 years later, the phoenix is reborn from the ashes again, and the cycle repeats.

In 632 BC, Duke Wen of the Kingdom of Jin was about to lead an army against the forces of the Kingdom of Chu.
The Duke asked one of his advisers, Jiu Fan, how they could win the impending battle, as they were drastically outnumbered.
Jiu Fan said, “All is fair in war,” and suggested a plan of dishonorable tactics (cheating).
The Duke was unsure of this advice, so he asked another adviser, Yong Ji, who replied, “If you catch fish by draining the pond, you can certainly get all the fish. But there will be no fish the following year. You can cheat this one time in battle, but such tactics can only be used once, as the enemy will be wise in future encounters.”

The Duke heard the words of his wiser adviser but cheated to gain victory in the battle. However, he rewarded Yong Ji more than Jiu Fan at the victory celebration, stating that while Jiu Fan's advice gained one victory, the wise words of Yong Ji would last forever.

This Chinese idiom/proverb is still used, over 2600 years later to remind people not to burn bridges, cheat, or dishonor themselves in exchange for a short-term gain while sacrificing the future.

竭澤而漁 is very similar to the meaning of the English phrase, “Kill the goose that lays the golden eggs.”