In Chinese, 灵 (líng) conveys the meaning of "spirit or soul."
According to Zheng's mother, Sherry Cao, and her sister, Dan Cao, "Ling represents Zheng’s spirit, her passion for music, her Spirit towards life and death, her cleverness in many ways."
灵 is the simplified form of the word.
靈 is the traditional form of the word.
At that time, the Communist Party of China (CPC) started to create simplified Chinese characters, in which anywhere between 20-30% of all the Chinese characters used in daily life were replaced by ones with fewer strokes and easier to write in order to make education more available to common people, especially farmers.