It is an environmentally symbiotic office built in the tea plantation.It packs a variety of elements into a simple square cube."Light and wind way" "Use of natural environment" "Variability" "Connection of space" "Semi-outdoor space" "Warmth of a tree" "Local production" We aimed for a building where nature, people and building closely resemble each other.The three-layer well becomes a variable buffer space and the adjusted light and wind envelop the building.It also becomes a variable building that changes its morphology depending on each season by using the natural environment.