Final answer:
Without specifics about Penghu's Daoist practices or beliefs, we cannot conclusively state that he is most likely associated with the Zhengyi sect of Daoism.
Step-by-step explanation:
To determine whether Penghao is MOST LIKELY associated with the Zhengyi sect of Daoism based on the provided information is challenging without specific details about his practices or beliefs. It is not clear from the context given that he is affiliated with the Zhengyi sect rather than other forms of Daoism, such as Quanzhan.
Daoism has various sects with different practices and beliefs. The Zhengyi sect, also known as the Way of the Celestial Masters, is one of the significant Daoist schools and is known for its ritual practices and connection to a lineage of priests dating back to the Han dynasty. On the other hand, the Quanzhan sect, which emerged during the Song dynasty, places a greater emphasis on monasticism and inner alchemy.
Without more specific information about Penghu's beliefs and practices within Daoism, we cannot affirm the claim that he is MOST LIKELY associated with the Zhengyi sect.