Private lessons
Just like he did in the past, Xin Feng picked up language as a subject to study first. The steps to learn the language of the country which was called Niphon, came in a scroll, and what contained in the scroll, looked much simpler than the books that he had to study in Dhī shén jì. The reason for such a difference might've been because the library was meant for people that knew basic knowledge, but maybe, there wasn't truly any difference. The reason why it probably looked quite simple was because almost every few areas within the entire page had an explanation to something, explaining everything like how the words can be placed together to create multiple sentences for example.