《明史·志·卷二十四》
王莽既然伪造了这部书，为何不删去圜丘、方丘的制度，天神地祇的祭祀，而自成一说呢？
莽既伪为是书，何不削去圜丘、方丘之制，天神地祇之祭，而自为一说耶？
Since Wang Mang had forged this book, why did he not delete the system of circular hills and square hills, the sacrifices of celestial gods and earthly gods, and make his own statement?
<s>[INST] Translate the following Classical Chinese text into modern Chinese: 莽既伪为是书，何不削去圜丘、方丘之制，天神地祇之祭，而自为一说耶？ [/INST] 王莽既然伪造了这部书，为何不删去圜丘、方丘的制度，天神地祇的祭祀，而自成一说呢？</s>
Translate the following Classical Chinese text into modern Chinese: 莽既伪为是书，何不削去圜丘、方丘之制，天神地祇之祭，而自为一说耶？
user
王莽既然伪造了这部书，为何不删去圜丘、方丘的制度，天神地祇的祭祀，而自成一说呢？
assistant