If you can read Classical Chinese (mine is pretty pitiful still), I'd highly recommend engaging with some of the primary sources, like the Ming classics. Unfortunately, Chinese scholarship does have some problems (not that Western scholarship can't fall prey to issues, don't get me wrong). One of the issues can be the attribution of historical events to probably unrelated pieces. As an example, "I Beg You, Zhong Zi" (锵仲子, Mao no. 76, Shijing, State of Zheng section) follows the love poem format, and is most accurately thought to just be a poem reflecting the realities of a love affair and how society may react, but there's a pretty strong Chinese school of thought that attributes it to an aristocratic affair that may or may not have happened. As far as Chinese literary study goes, this is probably the worst extent, so it's not that bad. Archaeological studies can (and tend to) be far worse, mainly due to rushed "reconstructions" of sites that tend to destroy the original features. Go for whatever information you can find, but always remember to take everything (Chinese or Western) with a grain of salt.

As a general rule it is best to read works from multiple views. If you are fluent in chinese, I would recommend reading any historical works in the native language of the author as publisher translations are not always reliable.

Both. Chinese history is rather lengthy and difficult to trawl through, but if you happen to be fluent in Chinese, do yourself a favor and read both native Chinese history and other Historians in English.

The reason is because there will undoubtedly be many differing viewpoints and even interpretations of history. Translations however are tricky, because translations usually have some degree of misinterpretation (usually, not always) or a potential risk for misinterpretations.

Overall though, do both. Because without a doubt Chinese academia and Western academia will approach history in China differently. :)