胆大心细

Explanation: Describe things done, to consider carefully. 　　Usage: Joint type; as the predicate attribute; describe things done, careful consideration 　　Source: Lu Xun's "Letters To Luo Qingzhen": "I am in favor of youth published works, to be 'bold but cautious', because the heart does not fine, it is easy to rush into the road." 　　Examples: ~ Fierce battle with a flexible style, killing and wounding hundreds of the enemy. (Jun Qing "rolling to different Jutal") 　　Riddle: Bulb