Which issue is Tianle eating chalk?

The fourth question. According to the story of the questioning variety "Informal Talks", Tianle said that it is not surprising to eat ash and ice. Tianle likes to eat chalk, which happened in the fourth period. Informal talks are a cultural talk show about foreigners doing things in Chinese. Every issue 1 1 Young men and women representatives sit together, share interesting stories of their respective countries, focus on the core issues that young people are concerned about at present, and express their opinions.