Chien has won three times on what is now the Epson Tour and twice on the Taiwan LPGA.
Former U.S. Women's Open champion Yuka Saso (66) and Charley Hull of England (68) were five shots behind.
This is Thompson's final event before the Solheim Cup in Spain on Sept. 22-24.
U.S. Women's Open champion Allisen Corpuz had another 72 and missed the cut, along with fellow U.S. Solheim Cup player Cheyenne Knight, who had a 73.
Linn Grant of Sweden shot 71 and missed the cut ahead of her Solheim Cup debut.
Persons:
—, Chien, “, ”, Ruoning Yin of, Morgane, Ruixin Liu of, Yin, Shanshan Feng, Liu, didn't, Yuka Saso, Charley Hull of, Rose Zhang, Lexi Thompson, Thompson, Allisen Corpuz, Cheyenne Knight, Linn Grant, Perrine Delacour, It’s, ” Delacour, I’m
Organizations:
CINCINNATI, Kroger, City Championship, Epson, Taiwan LPGA, Games, Kenwood Country Club, KPMG Women's, Former, Women's, Solheim, U.S, Cheyenne
Locations:
Chien, Taiwan, America, Asia, Ruoning Yin of China, Switzerland, Ruixin Liu of China, China, Former U.S, Charley Hull of England, Spain, Sweden