One of the earliest, and best, is an anonymous poem from the Eastern Han dynasty (25-220 A.D.) included in The Nineteen Ancient Poems: Far, far away, the Herdboy Star; Bright, bright, the Girl of the Heavenly River.
其中最早，也是最好的一首，是東漢無名作家「古詩十九首」中的「迢迢牽牛星」：迢迢牽牛星，皎皎河漢女，纖纖擢素手，札札弄機杼；終日不成章，泣涕零如雨。河漢清且淺，相去復幾許？