If there really is an "if" in life, there will be fewer joys and sorrows. If there is really an "if" in life, how can there be songs of separation and separation? I thought that what I was chasing was the end, but in the end I realized that the best had already been abandoned at the starting point. I thought I could blame everyone in the world, but in the end I realized that I had been blamed the most. If there really is water from the River of Forgetfulness, can it wash away this sorrow of separation and give me a bright beauty? If there really is water from the River of Forgetfulness, can we hold on to the lost hand again and resolve thousands of years of grievances? This article is not pure martial arts, it even involves some moral ethics. Ethicists and moral scholars should avoid it.