An illustration showing how the weapon called BI fixed on a long handle was used. https://www.viewofchina.com/ancient-chinese-military-weapons/

The 2200-year-old Qin Dynasty weapon called 铍, which were used by fixing on a long wooden handle, unearthed from First Emperor Qin's burial site along with the terracotta army. https://www.viewofchina.com/ancient-chinese-military-weapons/

The 2300-year-old Warring States weapons called 铍, which were used by fixing on a long wooden handle. They can help reach the target metres away but the joint points were relatively vulnerable and could easily snap.