No, the catch phrase is ziguyilai (自古以來, since ancient times), which may mean many centuries for islands in the South China Sea (other various claims were after PRC establishment) or 67 continuous years for Diaoyu/Senkaku. The Chinese-ness of the SGV isn't ancient enough, or Katrina Leung would not have found land for the consulate general (aka Camp FLG or May 35th Vigil Square) in Koreatown.