The Island Story: City of Sand 1981 on netflix

Four college students came to Lantau to climb. They stayed in a temple in the mountains at night. Under the hospitality of a little monk (Zhang Guorong), the students chatted with the master of the temple all night and found that the life of the monks was very different from that of the world. The four people who come here only want to climb the mountain, while the family pursues the peak of Buddhism; the family wants to see through the world, while the college students only want to see the red sun; when the men and women have a picnic on the beach, the host is talking about Zen, which is a very clear contrast between the family and the world. The next morning, the students left the temple to continue their journey. The little monk who was cleaning in front of the door just smiled and saw him off. His heart seemed to be full of understanding