is it possible to go to terracotta army and huaqing hot sspring in 1 day?

Yes, you can cover the two spots in one day. From mu experience, you are advised to go the Terracotta Army firstly in the early morning, because it won’t be crowed at that time. When you finish visiting, you can take tourist bus no.5 to Lintong Dongguan Bus Stop. Upon arrival, you may walk about 900 meters ahead to the Huaqing Hot Spring.