Thirty minutes. If the box falls to the ground for 30 minutes and no one picks it up, the box disappears and the activity is over. The super props in the treasure chest include any top skill book (such as fire sword, summoning animals, etc.). ), top weapons (such as dragons, rulings, artifacts, killing weapons, etc. ), as well as top-class costumes and other props (such as: 40-level new clothes, Jin Peng Jiabao, etc. ). The treasure chest cannot be traded and stored in the warehouse. If the treasure chest holder throws the treasure chest out, it will be regarded as automatic abandonment.