The couplet inscribed here is an extract from Li Jiao's (644-713) poem, Orchid, and can be translated:
Within the spacious hall a subtle fragrance sent forth,
Like music heard from a lofty terrace far away.
For complete sets of famille verte 'month' cups bearing Kangxi mark and of the period see Chinese Ceramics in the Idemitsu Collection, 1987, pl. 221; Percival David Foundation's Illustrated Catalogue of Qing Enamelled Wares, 1991, no. 815 and colour plate, p. 30; The Wonders of Potter's Palette, 1984, cat. no. 15; Chugoku Toji Zenshu, vol. 21, 1981, pl. 61 and Kangxi, Yongzheng, Qianlong: Qing Porcelain from the Palace Museum Collection, 1989, p. 65, no. 48
A complete set from the Jingguantang Collection was sold in our Hong Kong Rooms, 3rd November 1996, lot 585