The twin-tower building comes to be bridged by steel out of the first supplies lifted to about 22m on the morning of 22 April, in the program on Hangzhou Century Center (Gate of Hangzhou). The construction, originated from the first letter H from the Chinese pinyin of Hangzhou, is to take shape, which is composed of the super high-rise and commercial areas, with the former having two 63-storeyed parts standing about 310m high and towering municipally.