Speaking: Talk about a culture or natural site in Vietnam which was recognized as a world Heritage Site
1. what do you know about it? what's its name?
2. explain the reasons why it was recognized as a World Heritage Site
3. give the reasons why people would like to visit.
các bậc tiền bối giúp e vs ạ, ngắn gọn súc tích là dc rồi ạ:(
