The online website called "x6ud" mainly provides a free service for collecting reference photos of human poses. Through simple operations, it can help you find reference photos of human body poses. After entering the website, adjust the body and limbs of the human skeleton on the left, and put the skeleton in the pose you want. Then find the part you want to view from the menu, and press the Search button. In the right window, you can find a bunch of reference photos with the same pose and angle, and it is detailed enough to observe each joint position, even the angle of the ankle and palm can be specified. It is basically an assistant tool for drawing people. When I was drawing in school, I had to spend money to buy a wooden mannequin to pose, but now with this online tool, it can save creators the cost of buying a wooden mannequin.