How common is for the CCP despots to sabotage the auction process in international auction houses?

Wait! These two people who say the vase should be returned forget Mao wanted all relics from China's history destroyed. That means this vase is not stolen property.... but saved property. If Mao had found it all that would left now would be the broken pieces. Give the owners a little credit, they saved a part of China's past. Show gratitude, put something in their palm and then they will put the vase in your palm.