Prune after defoliation in winter. Cut off the upright branches about 60 cm long, and cover the rest with the branches of that year. In summer, we will continue to choose strong and upright branches, and the remaining branches will be leveled. In the next winter, we will still cut off the upright branches about 60 cm long. After the new branches bear fruit, we will cut off the remaining five big branches, which will be very beautiful.