Bian couldn't help laughing when Harti said her anxiety and fear when Mumut was called to Bian's room every day. At that time because Bian always told Mumut to come with a cold tone and mention the parts that weren't clean even though all the employees knew that Bian didn't tolerate it.
Even though he was surprised that Mumut could do the same thing every day, she never thought that there was a special relationship between them even though at that time gossip began to spread in the office, suspecting a scandal between Bian and Mumut.
Yes, Harti never thought there was a relationship between them, especially Mumut never said anything if she had a relationship with the company owner where she worked. She only found out that they were even married when Mumut invited her to celebrate her graduation.