Chow Kang is a minor character in Mortal Kombat franchise. Chow is Liu Kang's younger brother. His whereabout was unknown before the first Mortal Kombat Tournament.
Chan Kang (1995 film)
Liu Kang's brother is renamed Chan in the 1995 film Mortal Kombat.
After his older brother left the Shaolin Monks and went to America, Chan took Liu Kang's place and began training for the upcoming Mortal Kombat Tournament. One night, the sorcerer Shang Tsung visited the Monks' Temple and confronted Chan. The two fought, but Chan was easily defeated by the sorcerer. Shang Tsung killed Chan and took his soul, leaving a cryptic message for Liu as a warning. Chan's dead body was found the next morning by his grandfather and fellow Monks.
Hence, Liu Kang decided to enter the tournament to avenge his death. Liu Kang had harbored feelings of guilt for not being able to protect his brother since Chan's death. During the final battle between Liu Kang and Shang Tsung, the sorcerer attempted to confuse Liu Kang in order to killed him by morphing into his brother. While initially shocked by the image of Chan, Liu did not fall for the trick, though Shang Tsung temporarily gain upper hands. However, Liu Kang managed to fight back and defeated Shang Tsung, resulting in the release of all the souls that had been taken by the sorcerer, including Chan, who greeted his brother. Before ascending to the afterlife, he told Liu that his spirit would always be with him until they were reunited.
Mortal Kombat: Shaolin Monks, Part II[]
It's most likely that while Liu Kang summoned his pent-up strength, courtesy of Nightwolf's tomahawk encased with souls, he appeared in his brother's mind which gave Liu just enough strength to send Kahn to the deadly rows of fans below the Pit III! He stated to Liu once more that his spirit shall remain with him until they're reunited.