Hua Wu Que

The Legendary Twins (绝代双娇) also known as The Twins, Handsome Siblings, Legendary Siblings, The Twin Heroes, or Amazing Twins (and other similar variations) is a Wuxia novel written by renowned wuxia novelist Gu Long. It was written between 1966 and February 1969. It had a total of 126 chapters. The plot is based on a pair of twin brothers who were separated at birth and raised under different circumstances. This resulted in a great difference between their characters and personalities. They first saw each other as enemies, but gradually became friends and eventually acknowledged each other as brothers.

Source: Wikipedia