The house is built on a land located on the hill side. With the sloping surface, we design the first floor to be used as a garage, the second floor have two bedrooms for boys and grandchildren, the living room and the kitchen. The third floor includes the owner's master bedroom, laundry area, altar room and a curved staircase leading to the roof. This house has four sides overlooking the yard or the small garden. The curved roof helps to ventilate and soften the space. At the same time, it is also a place to plant trees to increase the greening of the house. The beveled roof forms an A-shape, with the top in the middle split to let light shine down from the top to the living room and kitchen space below. The interior space is filled with sunshine, wind, shade of trees created by small gardens and tubs surrounding the house. Each bedroom is connected to at least once the small garden is below and the garden is above. We can see trees when standing anywhere in the house. The toilets in the house are also full of natural light, well ventilated and have room to plant many trees. The building is a combination of trees, light and natural ventilation. The house has been designed to create a harmony of love of trees, mountains and a long-standing culture for the locals.