If there is no official consent of Lego, or the copyright of Lego, it must be infringement, because the country is paying more and more attention to the rights of this brand. If the official doesn't see or sue you after you make it, it's not a problem, but once someone sues you, you will be in a very unfavorable position. Basically, you need to pay a large fine, and it is best to communicate and negotiate with each other if possible.