1. Li Xiaoniu doesn't listen to other people's criticism. You can tell him that the bitter taste of good medicine is good for the disease, but the hard advice is good for the action. _______________________

2. Zhang Xiaoyong volunteered to be undercover in the drug dealer's lair. Nothing ventured, nothing gained. ________________

Zhang Jialu wants to explore this mountain, but he doesn't know about it. What should he do _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _