Going to the forest at the beginning of the fifth year is possible at any time, provided that you have seen Xianger in Hangzhou in the second year and chatted with Xianger in the middle of the pavilion in the middle of the lake. If you haven't met it in the fifth year because you are too moral, you can meet it around the age of 70. I also encountered this problem, and it took me a long time to find out that it was a moral problem.