After Nixon's historic visit to CHINA, how many subsequent POTUS and FLOTUS travelled there to E. Asia?

 Gerald Ford and Betty (Dec. 1975) accompanied

by First Daughter Susan

Jimmy Carter, Rosalynn (Aug. 1981

after leaving office)

Ronald Reagan and Nancy (April 1984)

George H.W. Bush and Barbara (Nov. 1989 during

first months of his one-term Presidency)

[ he was Ambasador to China, also CIA director ]

Bill Clinton and Hillary Rodham Clinton and First Daughter Chelsea (June-July 1998)

George W. Bush and Laura (Feb. 2002, again in Nov. 2005, and for opening of Beijing's 2008 Summer Olympic Games)

Barack Obama and Michelle Robinson Obama

(he traveled there in Nov. 2009, Nov. 2014, Sept. 2016 while she and her mother and daughters traveled with aides there for a week March 2014)

Donald John Trump (first term of office Nov. 2017 along with FLOTUS - his 3rd wife)

- - - the Bidens did not travel there except

when he was a VP - - -

2nd Term #DJT Trump without Melania but with Eric and his wife Lara; Barron (First Son in residence at 1600 Pennsylvania) is finishing his D.C. Branch semester at NYU (New York University School of Business).