Great lecture at HKU performed by professor Peter Sarnak from Princeton!!! The second half was too hard to understand and my brain was completely cooked🙃 HKU canteen is so GREAT!!!!cheap and delicious(thanks to the HKU student who lent me his student card🥰) (Professor Sarnak told me to forget about the math competitions and try the camps to discover the beauty of maths😂😂lmao) Man I love Princeton.