Handmade yixing teapot or not

To tell whether a teapot is a Handmade Yixing purple sand clay teapot手工宜兴紫砂壶, or is a Jigger-machined non-Yixing ceramic clay pot 机车非紫砂壶.

To tell whether a teapot is a Handmade Yixing purple sand clay teapot手工宜兴紫砂壶, or is a Jigger-machined non-Yixing ceramic clay pot 机车非紫砂壶.