For example, I have no design qualification for design work, but our company asked me to design things, and my colleagues checked and led the audit. My signature is not on the blueprint.
The responsibility identification of drawings is generally design, audit and design institute. If you don't have the corresponding qualifications, and the design institute knows that you don't have the qualifications, but lets you design, and there is no signature on the blueprint, and there is no seal of the builder or structural engineer on it, then you are basically not responsible. Those who are responsible are sealed and signed by your design institute, and these are the first responsible persons.