Traveling to & fro at night by train. Is it possible to see Terracota & Wild Goose Pagoda for a day?

Yes, it is possible. When you arrive in Xian by train, walk to your left hand to the east side of the square, looking for green luxury tourist bus to Terra Cotta Warriors. You should arrive in Xian in the morning, I guess. Then the same bus back to the city and then suggest you take a taxi to Wild Pagoda then back to the train station.

Thanks a lot, James! I sure appreciate the reply.