Goldman Sachs CEO appears to troll Trump on Twitter over 'Infrastructure Week' "Just landed from China...How did "infrastructure week" go?" Blankfein tweeted.

 -- Goldman Sachs CEO Lloyd Blankfein appears to have trolled President Trump on Twitter Friday.

"Just landed from China, trying to catch up .... How did 'infrastructure week' go?" Blankfein tweeted at 5:17 p.m.

The White House's "Infrastructure Week" was somewhat overshadowed this week by James Comey's testimony before the Senate Intelligence Committee.

Friday's tweet -- his fourth-ever --- follows an infrastructure-related tweet he wrote on Tuesday. "Arrived in China, as always impressed by condition of airport, roads, cell service, etc," he tweeted. "US needs to invest in infrastructure to keep up!"

A Goldman Sachs spokesman tells ABC News that Friday's tweet "speaks for itself ... it refers back to the tweet he sent Tuesday upon landing in China."

While Blankfein has had a Twitter account since June 2011, he only started to tweet on June 1.

And his tweets so far, have largely been fairly critical of the Trump administration.

"Today's decision is a setback for the environment and for the U.S.'s leadership position in the world. #ParisAgreement," he tweeted on June 1.

The following day he tweeted, "Leadership helps [the U.S.] Our language is dominant; $ global; talent comes. Bad if lost. Consider w/ making policy on enviro, trade, defense, etc."

Trump did take to Twitter Friday night, though, posting about Infrastructure Week.

"It is time to rebuild OUR country, to bring back OUR jobs, to restore OUR dreams, & yes, to put #AmericaFirst! TY Ohio! #InfrastructureWeek," Trump tweeted, along with a video of his visit to Cleveland, about an hour-and-a-half after Blankfein's tweet.