Question: How many  year locations are there for the womens doubles in Jing Junhong Li Jiawei?
SQL: SELECT COUNT("Year Location") FROM "1-28138035-20" WHERE "Womens Doubles" = 'Jing Junhong Li Jiawei';

Question: How many players are there for mens singles when Chen Qi Ma Lin played mens doubles?
SQL: SELECT COUNT("Mens Singles") FROM "1-28138035-20" WHERE "Mens Doubles" = 'Chen Qi Ma Lin';

Question: Who played mens doubles for the 1999 Kobe tour?
SQL: SELECT "Mens Doubles" FROM "1-28138035-20" WHERE "Year Location" = '1999 Kobe';

Question: Where was the tour when  Jing Junhong Li Jiawei played womens doubles?
SQL: SELECT "Year Location" FROM "1-28138035-20" WHERE "Womens Doubles" = 'Jing Junhong Li Jiawei';

Question: How many years did Lin Gaoyuan Wu Jiaji play  mens doubles?
SQL: SELECT COUNT("Year Location") FROM "1-28138035-20" WHERE "Mens Doubles" = 'Lin Gaoyuan Wu Jiaji';

Question: How many people are shown for mens doubles when Guo Yue played womens singles?
SQL: SELECT COUNT("Mens Doubles") FROM "1-28138035-20" WHERE "Womens Singles" = 'Guo Yue';