请修缮这段文字要求表达要清晰语法要准确。In China experts and scholars have different interpretations of the definition of a public service announcement Gao Pings 1994 illustrates that public service announcement is a non

In China, there are varying interpretations among experts and scholars regarding the definition of a public service announcement. Gao Ping's (1994) definition describes a non-commercial advertisement that serves the public interest. Its aim is to promote the construction of social spiritual civilization by spreading public service concepts through advocacy or warning. Pan Zehong's (2001) definition, on the other hand, emphasizes the use of short and light advertising forms and special expression techniques to address current problems and bad trends. Its goal is to arouse the public's interest, persuade and guide them towards well-intentioned actions, correct mistakes, establish new trends, influence public opinion, regulate social behavior, maintain social morality and order, promote social health, harmony, and orderly operation, and realize advertising promotion aimed at harmonious and sustainable development with nature. Zhang Mingxin's (2004) definition explains that public service announcements are not-for-profit advertising activities that use artistic expression techniques to spread beneficial social concepts to the public. Its aim is to promote changes in attitudes and behaviors.

In summary, public service announcements in China have three distinct characteristics. Firstly, they are public welfare activities that are not for profit. Secondly, they focus on social issues. And thirdly, they aim to guide people towards goodness and beauty through advocacy