This question is quite in line with the author's personal cognitive characteristics, just like a person who wants to buy a car asks whether Chery's car is better or BYD's car. In this option, there are no Mercedes-Benz, BMW, Porsche, Ferrari and Rolls-Royce. Whip. Com is the bottom of HowNet, Wanfang Database and Micro-General. These three thesis databases are based on authority and regularity. And Long Yuan. Com is an electronic reading platform, so it is not a paper database. What do you think will happen if you compare these two? The most authoritative is HowNet, followed by Wanfang Database, and finally VIP. I suggest you go to paper net, Tao Tao to learn more about periodicals and papers, or you won't know if you have been cheated.