I am a native speaker and I understood every word. There are some small pronunciation errors but I could still understand so great job! Perhaps focus on some of your vowel sounds now and make sure they are not too long.. or short at times :)

Hi Zhitian, I think that your speaking is really good but there's always room for improvement. :) I understood what you said although there were some parts that weren't very clear. I also thought that it was a very good idea to include your own opinion and personal experience. :D