Many things have opposite properties. The water you drink can also drown you. Pork may nourish you and keep you alive but under-cook it and it could kill you. Potassium nitrate is often used as a fertilizer to grow the food that sustains us but it's also been used as an explosive to topple buildings and destroy us.

This concept is easily associated with “yin yang” where an element has two opposite properties that are as different as night and day.

This proverb's meaning can be summed up this way: “Anything that can lead you to success may also contain great risks.”

This phrase is known in literary circles by Korean people (scholars or literature). It is therefore also a valid proverb in Korean Hanja, though most Koreans would not be able to make sense of it.

Please note that there is an unwritten rule when the same character appears twice in the same phrase, the calligrapher will alter the appearance so that no two characters are exactly alike in the same piece. This calligraphy has two repeating characters that will be written differently than they appear here.

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.”