The building capacity of development in Taiwan is based on building bulk ratio.
Mr. Cheng owns about 1500坪(around 5000 square meter) which the 29-7, 29-1, 29. (29-7 is the red block, 29-1 and 29 is the green block).
29-2、29-3、29-4、29-5、29-6 (the remained land) is owned by different group. As far as I know, these groups have relationship with Mr. Cheng.
To make another skyscraper come out, the first step must be integrating D3.