NTU CS here, their coding assessment is not hard to pass and qualify for hackathon, cz1007 questions are harder than their coding assessment, FYI you only need to know how to use search engine and solve 1 leetcode easy question to pass the assessment, I do not understand why people say assessment is hard. And for the hackathon, its just a CRUD web app where they tell you to prepare beforehand alr... To put it bluntly, those people who got rejected really CMI or cant be bothered to prepare for hackathon.