1.in the most place of China
2.I think you make something wrong,"暖和一开“no this sentence.
3.就拿。。。来说=for example,take Beijing for example
4.恋爱 is noun. a relationship. 爱恋 is verb ,fall in love with somebody
5.Our company is engaged in culture exchange,play as good as them.
6.all
7.I can play Yu(a Chinese traditional instrument)