Visiting major attraction in xian for 2 days.

Hi, I am a local person. To my experience, here is my suggestion:
1st, you can visit the Terracotta Warriors Museum. After that, the nearby Huaqing Hot Spring Pool should not be missed. At night, you can wander at Muslim Quarter to have a look at the local culture and taste the local snakes.

2nd, Shaanxi History Museum is suggested in the early morning. Then you can go to the City Wall. After that, Big Wild Goose Pagoda is suggested. If you have time at night, you can go to enjoy the Tang Dynasty Music & Dance Show.

On the first day, I arrived at 2 PM. Is it enough time to go to terracotta warriors?
On the 2nd day, I have full day from morning until night.

Hi, the museum will not close until 17:00. You can still go there upon your arrival.

To ensure everything going smoothly, my suggestion is that you can enjoy yourself in the city center on the first day and visit the warroirs on the next morning.

okey, that is a great suggestion. Thank you very much Andrew :)