Tourism index is a "barometer" to reflect the overall development level of tourism. The tourism index compiled by historical data can not reflect the real situation accurately with the increasing influence of network events on tourism In the Internet era. This study collects time series data of tourism network search by Baidu index tool and uses data mining method and principal compon... https://www.bekindtopets.com/special-pick-Grandpa-s-Best-Prairie-Hay-quick-pick/