The middle-aged woman was initially delighted to hear that the cloth wasn't charged, but when Gu Ruinian mentioned his request, she looked nervous and said, "What's the matter? If you want me to do something bad, then I won't buy it."
It seems one shouldn't be greedy for small gains; a huge pit might be waiting ahead.
She was just here to buy a sieve for steaming buns, not to do anything bad.
Gu Ruinian said, "Big sister, am I such a person? It's just that when you go out, help us promote that our prices at Wu Ji are cheaper than Jufu Supermarket."
So it's about promoting.
The middle-aged woman hesitated for a moment, thinking she planned to go to Jufu Supermarket to buy thread when she repaired her pot. If Jufu Supermarket found out she bought things at Wu Ji, they might not repair her pot, and she'd spend more money fixing it.
