With the increasing expansion of urban scale and the rapid growth of urban population, the real contradiction between city and cemetery buildings, city and death has once again become the focus of today’s topic. The increasingly tense demand for land promotes the emergence of vertical cemeteries. Based on this situation, the building is located in the underground space, and a vertical cemetery is established to explore the possibility of future memorial buildings. The design site is located in Yushu City, Qinghai Province, to commemorate the people who died in the Yushu earthquake on April 14,2010. Yushu, located in the hinterland of Qinghai Tibet Plateau, has been an important traffic, military and trade town since ancient times. The architectural appearance originates from the unique "prayer flags" form in Yushu area, and responds to the Tibetan culture's emphasis on “centripetal” concept of time and space. At the same time, it follows the local mountain building type and forms the stepped section. The building takes Yushu earthquake as the starting point, abstracts earthquake cracks as the main path of building space sequence, and introduces light, according to the change of solar height angle, forms gradually changing light and shadow on the main path, and guides people's streamline. At the same time, the light forms the projection of different lightness on the interior facade of the building, and explores the expression way of the interior facade of the building: the pixel blocks of different lightness form the pattern to render the commemorative atmosphere. The overall architectural space form adopts the unit type, and each unit is equipped with an operable light screen. Through the development of digital technology in the future, the living can transcend the boundaries of time and space and "meet again" with the deceased. The main flow line starts from the ground down, and then reaches the upper part of the building through the vertical elevator. People can light the upper part by lighting candles in the transparent glass block and other commemorative ways, as a continuation of life.