Sorry, I don't know why Huang Jialong has to transfer to airport hotel for free. However, according to Ma Honeycomb's inquiry, international and domestic overnight transit passengers who stay at Xianyang International Airport for 6 to 48 hours can enjoy one night's free accommodation (booking free transit accommodation 24 hours in advance) and will be arranged in airport hotel, Huangjialong. If you have any questions about Huang Jialong's free transit policy in airport hotel, I suggest you contact the front desk of the hotel for consultation.