1. After opening the nut of the cup, open the sealing cover of the straw, and then pull out the old straw inside. After that, prepare a new straw, align the nut and insert it into the straw hole. After the straw passes through for a short time, keep the position where it passes.

2. It should be noted that the air return hole on the side of the suction pipe should be aligned with the exhaust hole on the tooth cover, and then the tooth cover with the suction pipe should be aligned with the cup mouth and tightened, and the quilt with the suction pipe will be installed.

3. After opening the nut of the cup, open the sealing cap of the straw, then pull out the old straw inside, prepare a new straw, align the nut and insert it into the straw hole. After the suction pipe penetrates for a short time, hold the penetrated part.

4. Note that the air return hole on the side of the suction pipe should be aligned with the exhaust hole on the tooth cover, and then align the tooth cover with the suction pipe with the cup mouth and tighten it, and the quilt with the suction pipe will be installed.