MCU Fans Freaking Out Over The First Shang-Chi And The Legend Of The Ten Rings Trailer Black Widow preview a couple of weeks ago, we weren’t expecting our first look at the second film of the MCU’s Phase 4 so soon. But, now that it’s here, it promises to be another awesome chapter in the never-ending franchise. And social media is exploding with excited reactions. First of all, Liu lost it on Twitter when he realized the trailer had been released several weeks early as a present to him. His string of incomprehensible letters is pretty much how every Marvel fan felt when they discovered the news.