The service provided by Zuzuche is truly frustrating. When encountering issues with car pick-up, it's impossible to effectively negotiate with the local branch and we have to negotiate with the headquarters, which takes 20 working days! It's hard to imagine how helpless a tourist feels in a foreign country unable to pick up a car while Zuzuche does nothing to help. Nearly 10 days have passed, and Zuzuche has not proactively contacted us, provided no solutions, and given no updates. They are constantly evading the problem. When booking a car, make sure to check which locations accept UnionPay cards. However, Zuzuche now marks all locations as not accepting UnionPay cards to avoid taking responsibility for not knowing the service of the branches. Make sure to call the branch in advance to confirm and avoid any losses. Based on my personal experience at the rental hall of San Francisco Airport, Hertz, Dollar, and Thrifty accept UnionPay cards and provide excellent service. Be cautious when booking with Sixt, as they do not accept UnionPay cards, and deliberately list many low-priced cars without insurance on the platform to attract customers. In reality, driving without liability insurance is illegal in California, and the branch forces you to purchase it at an additional cost of over 20 dollars per day. Strongly condemn such unethical practices by Sixt. Hertz's service is very professional, but the compact car category is not very reasonable. I initially booked a Ford Focus or Toyota Corolla but ended up with a Honda Brio. I had to pay extra to upgrade to a Camry, which turned out to be a pleasant surprise as it was almost new with less than 3000 miles. It truly felt like a high-end car. In the future, it's safer to rent from the mid to large-size car category.