Museum - the world's first underwater inscription museum Introduction: Among the world-famous protection of cultural relics in the Three Gorges, the Baiheliang inscription protection project has been listed as a top priority. Since the National People's Congress passed the "Resolution on the Construction of the Three Gorges Project" in 1992, multiple Baiheliang protection plans have been discussed, affirmed, and denied time and time again, and the "pressureless vessel" plan was finally selected and implemented. This is a pioneering initiative that combines the field of cultural relics protection with the field of engineering. It is the most complex cultural relics protection project in the Three Gorges Reservoir area, has the highest technological content, involves the widest range of disciplines, and has the most academicians participating. All parties involved in the construction worked together, cooperated with each other, worked hard, and constantly innovated, and finally built the world's first underwater museum.