72 window corridors are surround the jade spring courtyard the corridor, if everybody has the interest, may several, look is 72, because although these windows the age is remote, although looks is not very the magnificent sight, but actually establishes a new school actually in our country botanical garden history, it was ancient times "Ritual Records · Month Command" according to our country 72 relationship between living things and the seasons phenomena, the careful design, a phenology counter-year was on fifth a period of five days, three waited solar terms, the altogether 24 commands, the twenty-four terms, the window shape had the circle, in the right way, had the flowers and plants insect fish, 72 windows is various.