After checking Chen mu sheng was fine. Yan Shu refolded her gun back to the perfume bottle. The perfume bottle then turned into the shape of a high heeled shoe. Inside the bottle was a small space, Yan Shu whipped out her 'lipsticks' within... Surely enough, it looked like a lipstick but wasn't.
She removed the red stick from the lipstick and inside the space within, there was a strange liquid. She poured the liquid into the shoe-shaped perfume bottle. As soon as that water like liquid went inside the smell of gun powder turned into a fresh fragrance.
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One day Song yun accidentally saw this 'shoe' in Yan Shu's bag and she made her fun for carrying a shoe in her bag. But yan shu justified the reason of its usefulness was its 'scent'.