What episode is Princess Zhu Huan's second Golden Lock sprained ankle?

In the suburbs, Swallows and others were attacked by a group of men in black. The swallow was captured and the golden lock accidentally fell off the cliff. Wei Zi fell to the ground because the carriage was out of control. After a chaotic fight, everyone was forced to disperse. Erkang stayed at the inn with the injured Wei Zi, Yongqi and Xiao Jian waited for an opportunity to save the swallow, while the golden lock that fell off the cliff was difficult to walk because of injury, and was protected by Liu Qing and Liu Hong.