I found a great website where you can customize each joint of the human body, and the system will automatically search the internet for real-life photos of similar poses through AI, to give you reference. For example, if you want to find a picture of someone bending over to pick something up, just adjust the pose of the joints, and this website will quickly provide you with many similar action photos. Additionally, the reference photos can be searched by gender, making it very suitable for people looking for reference photos for portrait illustrations.