Lost in her thoughts, Tian Sangsang absentmindedly bumped right into Aunt Zhang in the living room.
"Ah!" Tian Sangsang exclaimed, looking at the scattered vegetables all over the floor. It was Aunt Zhang's vegetable basket—she had just returned from grocery shopping. "Aunt Zhang, I'm sorry! Look at me, completely distracted."
Aunt Zhang said, "It's no big deal, but be more careful. Don't let your thoughts wander so much while walking—this isn't like being at home. One misstep outside, and it could be serious."
Tian Sangsang crouched down to help her pick up the vegetables, still feeling a bit dazed. Suddenly, a sharp, pungent smell made her stop—she glanced at the green vegetable in her hand. Celery! She hurriedly put the celery back into the basket and instinctively rubbed her hands together.
Noticing her actions, Aunt Zhang grew concerned. "You're allergic to celery—will you be okay after touching it? Let me handle it instead."
