百度百科 is a collaborative encyclopedia that covers a huge range of topics, sometimes with surprising quality, even including video and in-depth discussions of topics. When searching for various things in Chinese, 百度百科 often ranks very high.

For language learners, it’s interesting to note that this is true for many Chinese related questions as well, such as the origins of idioms. Check this entry for 未雨绸缪 for example, which comes with a video and enough information about origins to satisfy most readers, or the entry on pandas here: 大熊猫.