Let me remind you here that you can take a taxi to Hongyan Museum. The museum is under the hill, the Bai Mansion is half-way up the hill, and the dregs cave is on the top of the hill. All these scenic spots are ticket-free. From the Red Rock Museum, you can take a 20 yuan sightseeing bus. In fact, every scenic spot can buy a sightseeing ticket. I think it's cheaper to take a taxi from the bottom of the mountain. The sightseeing bus is a circular shuttle bus. After visiting one scenic spot, you can take a bus to another scenic spot, and finally take a bus down. I went to Bai Mansion on May 1st. I was stuck in traffic on the mountain. I threw me between Bai Mansion and dregs cave. I walked for more than 20 minutes to the dregs cave on the mountain road. After visiting the tickets I bought from the dregs cave, I went to Bai Mansion and took a bus down the mountain to the end of Hongyan Museum. Then walk more than one kilometer to the subway entrance.