For a long time, Stock 20 was not used by Taichung train station. Its managers made it clear from the start that for an unspecified but temporary time period, the railroad would not be using the warehouse, and that whoever occupied it during that period would have to leave once an important use was found for it again.
二十號倉庫原本是一處「閒置」空間，而空間的閒置，本是一種不定的暫時狀態，當更重要的計畫出現時，閒置時期的利用者自然應該退出。