 The second type of differences is product life cycle difference. For B2C product, it's actually extremely fast launch product features, test out new features, and also kill product features. For example, if you had tried out TikTok, TikTok has done different kind of experiment with different users. For my TikTok app, even if currently only have 100 subscribers on TikTok, make sure to follow me on TikTok. But TikTok still have a customer's tap for me, not just typical for you, and popular tap. I have a special tap called stem feature. This tap is only available for customer segmentations like me, even if I only have 100 followers on TikTok. However, some of my other students, they have a tap called music that's specialized for that person. So TikTok is actually trying to do experiment among different type of users to figure out how can they maintain their user attention and keep them safe on the platform for a very long time. So they are rapidly developing new features, test it out, and kill those features all the time.