Columbia subject headings:
Harvard subject headings:
China--Biography.
China--History--Qing dynasty, 1644-1912--Biography.
Li, Gong, 1659-1733--Friends and associates.
Yan, Yuan, 1635-1704--Friends and associates.
Princeton subject headings:
China--Biography.
China--History--Qing dynasty, 1644-1912--Biography.
Scholars--China--Biography.