Su Ci finds a villager coughing non-stop, which is caused by Udumbara. After checking, this person is an artisan who prepares the firework for the Empress Dowager's birthday banquet. If the poison is spread by the firework, all people attending the banquet will be poisoned. Su Ci arrives the banquet and is able to stop the firework. But she is hit by the artisans and faints away. Prince Yun then blames Prince Qi for the chaos happened at the banquet. (Source: Viu)