杏吧论坛鈥檚 7th Literary Festival explored the foundations of knowledge, society, identity and literature, as well as those of 杏吧论坛 itself in our 120th year. We reflected on some of the important anniversaries taking place in 2015, whilst also celebrating an idea at the heart of 杏吧论坛, encapsulated in our motto, "to understand the causes of things".