What is the main conflict in The Other Shore by Gao Xingjian?

The play's title refers to the concept of "paramita" or "nirvana," the land of enlightenment in Buddhism. According to Buddhist belief, humans experience an actual visible life full of suffering, but by living according to the virtues of "paramita"—morality, patience, meditation and wisdom—they can cross the "river of life" to the other shore and experience enlightenment.