The annual profit from planting is about 20,000 yuan.

90 Camellia oleifera trees can be planted per mu of land, with an average annual output of about 180-360 kilograms of dry Camellia oleifera seeds per mu. If the oil yield is calculated as 23, about 80-160 kilograms of oil can be produced per mu. 10 acres of land can produce about 800-1,600 pounds of oil. The income from a high yield of camellia oil per acre is 4,800-9,600 yuan. In the fourth year, based on half the harvest, it is 2,400-4,800 yuan. If you plant 10 acres of land, the maximum amount in the fourth year is 12,000 yuan.