Chenxi Park plans to plant four different characteristic trees in the east, south, west and north of the park, with only one in each area  The selected characteristic tree species are: North pine, ginkgo biloba, Sapium sebiferum and dragon cypress  The basic requirements of the layout are: (1) if ginkgo biloba is planted in the east or south, dragon cypress or tallow cannot be planted in the north
(2) Pine or ginkgo should be planted in the north or east
Planting Ginkgo biloba in North District