不冷不热

Explanation: Means the temperature is not high not low, hot and cold medium. Also compared the attitudes of the general. 　　Source: Qing Wen Kang "Heroic Biography" thirty-fifth back: "I would see his children with a hand held high in a bowl of boiled and thorough, are neither cold nor hot, cool and affordable, and delicious tea to children's. "Ba Jin" Cold Night "three:" This day is rare in the mountain town lukewarm good days. " 　　Examples: ~ The attitude he took, and her ambiguous relationship to maintain. ★ Erfu "Shanghai Morning" third Erqi