More than once to Nanjing, and more than once to Zhongshan Mausoleum. I remember that there used to be a charge. Tickets were twenty. Now they are free. It takes a long step from low to high and up the hillside to get to the sacrificial hall. And the altar is at the top of the hillside. White wall, sky blue top. The inside of the altar can not be photographed, but can only be visited inside and photographed outside. Inside the altar, there is Mr. Sun Yat-sen's Hanbai Jade Statue in the middle and back, with flowers in front, and the whole building is made of stone. The whole is solemn and solemn.