A brief summary on today's session:

1. The talk given on "growth hacking": The marketing and promotion methods shared by Bjorn are quite amazing. Large amount of investment into marketing is one way, spending almost nothing but try to catch people through various existing sharing channels can be more powerful than I imagined. The approach to popularizing an app is so diverse and is readily available if you invest time and efforts.

2. The story-telling style sharing about start-up is quite interesting. Entrepreneurship is always a hard way to go. Team is ultimately important. Other obstacles and challenges may turn out to be beneficial somehow. Be flexible and agile when creating something by keeping everything as simple as possible. Try to recognize and try your best to correct errors at earliest stage possible. Focus on the product itself to differentiate. Last but least, be well prepared to suffer if ever go into founding a start-up.