Welcome back to Wall Power. I’m Marion Maneker.

Memorial Day weekend is traditionally a busy time for Christie’s, which holds major auctions in Hong Kong both during the May holiday and after Thanksgiving. Of course, all that is about to change, as I’ll explain below. I’ll also fill you in on Yuan Fang, a young painter making her London debut at Skarstedt gallery this week. Fang is a standout among a field of female abstract painters, and her show in London is just the latest step in her ascent.

But first…

• A Christie’s hack update: The latest twist in the Christie’s cybersecurity saga came Monday when Brett Callow, a Canadian “threat analyst,” posted on Twitter that the hackers who attacked Christie’s two weeks ago were...

On a superficial level, the auction house simply reported that it would inaugurate its...