This made them speechless for a long time and after a while the brother and sister duo started taking it as a challenge. They started treating it as a game to make Shao Rong treat them informally while she was working.
After a multiple number of attempts, they couldn't get to her to do so and finally decided to give up.
They actually respected her dedication to her work and never interrupted her during work. But they would somehow always find the time when there are no customers to attack her.
Even the Bosses for whom Shao Rong worked started finding the games of these kids amusing and they never stopped them from doing so.
As long as the kids did not disrupt their business, why would they stop them from enjoying a little?
It worked as their entertainment too.
Thankfully the kids did not go beyond and do anything harmful during all their games. Hence their businesses were good and so are Shao Rong's jobs.