Wen Yan had read existing books on meridians and had seen mannequins, but the annotations were quite different from what he wanted to compare.
Because this thing is not like the blood circulation system, which has benefited from the contributions of many anatomy teachers, allowing precise three-dimensional modeling.
This thing is fundamentally not precise, if you say it exists, it can't be precise, if you say it doesn't, there are numerous cases proving it's indeed useful, so the result is mostly as if it exists.
In the end, when applied, it greatly tests personal competence, with high difficulty in replication and high learning costs.
Just like the Scorching Sun Fist of Fuyu Mountain, first-stage children can learn it, as a foundational boxing technique it's completely fine, but starting from the second stage, without Scorching Sun, it instantly becomes a technique for kidney deficiency.
