Based on the given information, please explain the connotation of "red" in the concept of red tourism. Requirements: Accurate and concise. No more than 150 words.

Answer: "Red" refers to the memorial sites, landmarks, revolutionary deeds, etc. formed by the people under the leadership of the Communist Party of China during the revolutionary war and socialist construction period, as well as the arduous and arduous efforts they carried. fighting spirit and revolutionary history and culture. This revolutionary spirit and culture can provide the people, especially young people, with knowledge acquisition and spiritual inspiration, and further strengthen their thoughts and beliefs in following the path of socialism with Chinese characteristics and realizing the great rejuvenation of the Chinese nation under the leadership of the party.

(145 words)