"Miss Walker!" Bob exclaimed in panic. "It's okay," Stela said and slowly stood up straight with a pale face. "Don't worry." Bob looked at her worriedly, "Are you sick? Do you need me to send you to the hospital?" "No, thanks. I've brought medicine with me. I'll be fine after taking it." "Are you sure?" "Yes," Stela said as she took out the painkillers from her bag. Then she poured one pill out of the bottle and swallowed it directly. Then she found that there was only one pill left in the bottle. After a few minutes, the pain in her chest was alleviated a little and she felt better. "I'm sorry, Bob. I dirtied the floor. I'll clean it right now," Stela said apologetically. "No, no, no. You don't need to do that. You are a designer now and your hands are very precious. I'll let the

