He’s king of the jungle.  President Trump wasn’t intimidated by his Chinese counterpart Xi Jinping during their historic summit in Beijing Wednesday, according to a body language expert, who compared the commander-in-chief’s power moves to that of a lion.  “I think that Trump feels the power, feels like this is a formidable meeting. He is not intimidated by Xi at all. He’s showing, kind of like a peacock or a lion, he’s showing his power,” Lillian Glass, a Florida-based body language expert who has served as an expert witness in federal and state courts on behavioral analysis, told The Post.  President Donald Trump walks alongside Chinese President Xi Jinping as they review an honor guard during a welcome ceremony at the Great Hall of the People in Beijing, on May 14, 2026. Getty Images “He was showing his gravitas, nothing contrived.…