If you think the height of the table in the university dormitory is too low, look for the carpentry room in the school (many universities have carpentry rooms). There must be a wood square or a board head in the carpentry room. Find some of the same height and take them to the dormitory. Pad all the tables so that they are all the same height. If there is no carpenter's room in the school, you can go to the board market, buy one or two squares, take them back and saw them into small pieces to put under the legs of the table.