Douding.com: some academic things in the Douding network to find better, because the time is relatively long ah, things are more complete
Baidu library: is a public **** platform, the content is also more, but after all, not long ago, there are some things can not be found. But relatively speaking, Baidu's user base is large, under a lot of information as long as the registered user can be la, a lot of information is not to download the wealth value, so, from the long-term perspective, is very promising.
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If under the general things, Baidu library is good, more specialized, using the Douding network is a good choice.