The definition rules of keyword query in the Allied website: we analyzed about 2.5 million websites (including data not displayed) that were captured, and summarized and analyzed websites with the same keywords (websites containing keywords or keywords analyzed by word cutting tools). Due to the size of the length and page capacity, we can only display relevance data matching up to 10 keywords. The accuracy of keywords is about 80%, and about 20% of the data may be biased (word cutting tools cause error analysis).