You mean the Guangzhou Museum in Yuexiu Park, where adult tickets are closed on Monday. 10 yuan is alone. If you are interested in cultural relics, you can go in and have a look. If you don&;t know about cultural relics at a glance, even tickets to 2 yuan will be too expensive. There is also the ticket to the Museum of the King of Nanyue, 12 yuan, which is opposite. There are also cultural relics such as calligraphy, antiquities and tiles. If you want to see them for free, you must go to the Guangdong Museum in Zhujiang New Town. It is free here. As for why Guangzhou Museum and Nanyue King&;s Tomb Museum charge tickets, it&;s only right to ask. Ordinary people certainly want to visit them all for free.