A set of three and one Chinese blue and white dishes

A set of three and one Chinese blue and white dishes
Qianlong (1736-1795)
Each decorated with a lady holding a fan and a boy with a tray of food in a fenced garden landscape with pine and rocks, rim frits and hairline crack
The set of three dishes 41.4 cm. diam.; the other dish 36.4 cm. diam. (4)