 The third type of interview questions is product design type of question. Now product design is very typical in all type of interview brands within tier 1 companies or tier 2 companies, all type of companies. And in TikTok, they ask you something very specific related to their product. For example, question number 9. How would you design TikTok for an elder audience? Question number 10. How would you improve TikTok? Question number 11. What's your favorite product and how would you improve it? When you answer the design and the favorite product questions, you need to use two different frameworks. For example, for what's your favorite product, you must dive deeper into different kinds of customer segmentation. Before you talk about yourself, what's your favorite product? Because we represent one group of customer segmentation. And when you talk about why it's a favorite product, you must address specific pain points of you who represent this customer segmentation.