Tim Cook, Apple's CEO, visited China to solve a series of problems, ranging from iPad trademark dispute to treatment of local labor, according to Reuters.

Cook was spotted Monday in an Apple Store of Beijing, China. Then he talked with Beijing's mayor.

Apple said the purpose of meeting with government officials is to improve its investment in China, the second most important market for the tech giant. "Tim is in China meeting with government officials. China is very important to us and we look forward to even greater investment and growth there," Carolyn Wu, China spokeswoman for Apple, said.

No further details are available, except Cook would meet other government officials on Tuesday.

Recently, there were a series of issues dogging Apple, such as long-term dispute with Proview and sweatshops running in China. Cook is expected to solve the problems this time.

However, so far no meetings have been set so far between Cook and Proview, the unnamed sources familiar with the situation said. "He should be here to also understand more of the iPad issue and handle the situation," one source close to Proview said.

And Foxconn is also under criticism and pressure, especially after the New York Times published a lengthy report about the terrible working conditions in the factory early this year.

At the beginning of Cook's visit to Beijing, an activist group based in Hong Kong published an open letter, demanding "that Apple ensure decent working conditions at all its suppliers."

There are grievances cited by employees at Apple suppliers listed in the open letter, including "poverty wages" and excessive and forced overtime.

"They describe their daily routine as work, eat and sleep. They described themselves as machines that repeated the same monotonous motion for thousands (of) times a day," it read.

How will Cook to solve these issues? Leave your comments below.