I rarely give 5-star reviews for overseas car rentals because they usually try to sell you insurance when you pick up the car. But this rental company was incredibly helpful. They did mention whether I needed additional insurance, but when I told them I had purchased full coverage through Ctrip, they didn't say anything more. What surprised me most was that a small dent in the door was caused by a stone kicked up on the highway. I had read previous reviews saying it could result in a deduction of several thousand pounds, which worried me so much I couldn't sleep all night. But when we returned the car, the staff were incredibly friendly. They used a measuring tool (it looked like a circle) and consulted a very handsome Chinese guy (I think he was their manager), and then told us we didn't need to pay for it. So, you really have to experience it for yourself to know if it's good or not.
The car we received also had a free upgrade. However, please note that the rental office is only open half-day on Saturdays and closed all day on Sundays, so be mindful of the times when picking up and returning the car.