China

1780-1820 (Qianlong)

1780-1850

1780s (Ch'ing)

1786 (Qing)

ca. 1800

ca. 19th century

ca. 1800 (Qing)

ca. 1st quarter 19th century

1793 (Qing)

1796-1820

1796-1820

1796-1820

1796-1820

1796-1820 (?)

1796-1820

1st half 19th century

1800-1850

1800-1850

19th century or earlier (Qing)

19th century (Qing dynasty (1644-1911))

1st half 19th century

19th century

19th century (Ch'ing)

1st half 19th century

1800-1890 (Qing dynasty (1644-1911))

19th century

19th century

19th century

19th century

19th century (Qing dynasty (1644-1911))

19th century (Ch'ing)

19th century (Qing dynasty (1644-1911))