Mortise and Tenon of Time and Space: the Twin Diaries of Xixia Si Tianjian

The secret key to the intersection of three layers of time and space is hidden under the Dunhuang sand sea. Achen, the last descendant of Xixia Sitianjian, accidentally got involved in the crisis of time and space imbalance with only the "Twin Diary" left by his father. The mysterious girl airborne with a Star Pulse mechanical watch. The pattern on her wrist can open the origin of time and space, and the mark on her collarbone is proof of the bloodline of the ancestor. The two of them worked side by side, uniting the upper layer of void craftsmen and the lower layer of mirror messengers. From the siege of the city by the tombkeeper to the breaking of the boundary by the energy devourer, from finding the compass in Kunlun to sealing the rift outside the territory, they shouldered the mission of guarding the three layers with their mortal bodies. There are also many beauties who accompany them, either to defeat ancient formations out of wisdom, or to defend against powerful enemies together. When the Symbiosis Bell rang throughout the three realms, Ah Chen understood: What his fathers left behind was not just a log, but also the ultimate destiny to control the mortise and tenon of time and space and create civilization and tranquility!