Vantaggi
Its an eye opener. If you would like to learn how a large Chinese corporation works then you will learn a lot. I certainly learnt a lot. I travelled the world doing business for Huawei in Europe, Asia, Africa and the way Huawei does business is very different from Western companies. All in all a good learning experience for me.
Svantaggi
Unless you are Chinese born national and willing to commit a 6-10 years to the company there is a glass ceiling for most non-chinese employees. The company is very hierarchical and has a very much a top down command and control structure. If you want to collaborate with your peers on a new idea or initiative you cant just discuss and get going with your peers - you have to go up through your chain of command and then down to your peers managers and then if they agree you can go ahead - that can take months by which time the business opportunity is dead.