Although we use CEFR level standard to group students to the same level, there is no perfect scale to grade each student and also, the knowledge is broad and difficult to be classified with a clear standard. The published textbooks cannot meet the needs of each student. Therefore, teachers will design their own courses for their students and do their best to support everyone in their classes to grow and learn. The greatest advantage of online classes is that teachers and students can search for suitable learning content from this boundary-less online library instead of being limited to specific books. Making kids learn logical thinking and knowing how to pick up the right piece of information from the enormous database then use it right, is more important than making kids remember them. When the books are printed and published, they are already out-of-date, we expect the students to learn the up-to-date information rather than the wrong.