beijing u.s. president donald trump leave beijing friday asia-pacific economic cooperation summit vietnam first lady melania stay behind play tourist view pandas zoo visit great wall china beijing zoo 47-year-old former model feed giant panda name gu gu learn nutrition train greet group school children wave miniature chinese american flag hand stuff toy eagle watch children sing chinese folk song panda enclosure thank much say melania sign panda print write thank beijing zoo wonderful meet gu gu melania trump late afternoon melania walk along part mutianyu section 20,000-km 12,400-mile long great wall unesco world heritage site china frequently take visit head state spouses previous first ladies melania use platform champion public cause prevention childhood bully combat opioid epidemic unite state play prominent support role president multi-leg asia visit praise chinese social media comparisons china glamorous first lady peng liyuan comment apparent ease navigate ancient cobblestone forbid city super-high stilettos upon arrival beijing wednesday accompany peng melania watch cultural performance paint pandas participate cook class primary school thursday many china twitter-like weibo applaud melania grace sense style well cultural sensitivity china wear mostly austere coat dark gown dolce gabbana alexander mcqueen contrast magenta delpozo outfit electric-blue heel upon land south korea days china say remain big fan first lady often affectionately refer online peng mama roughly translate mother peng still think mama ooze grace also exude motherly air one weibo poster say chinese social media sit police heavily normal important political events negative sensitive matter swiftly block remove internet censor trump depart say twitter wife next stop would alaska would greet amaze troop however trump daughter adviser ivanka popular china accompany father disappointment fan first lady melania play tourist trump depart beijing