World-renowned dissident artist Ai Weiwei said Monday that Chinese President Xi Jinping's survival depends on his ability to secure his legacy and political agenda, and that it would be "dangerous" for the leader to lose his position.Labeling Beijing's top leadership as "ruthless," the Chinese artist, now based in Portugal, told reporters in Tokyo they were "constantly struggling internally for power," adding that Xi had an "imperious understanding of the state," whose priority for the next five to 10 years would be to secure his legacy.The comments come as Xi started Sunday an unprecedente…READ FULL ARTICLE