Bal b/f TW$24+TW$3=TW$27 Bal c/f
https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.hkcna.hk/docDetail.jsp%3Fid%3D
Bal b/f TW$27+TW$3=TW$30 Bal c/f
https://www.hk01.com/%E7%A4%BE%E6%9C%83%E6%96%B0%E8%81%9E/976115/%E5%85%A7%E5%9C%B0%E7%A6%81%E4%B8%80%E5%8D%A1%E5%85%A9%E8%9
https://youtu.be/a5fuScniOo0?si=6gxLDvYgIKIthoKp https://youtu.be/fhN_vq9tklI?si=qyqkgeRdZdGV05cw