Moreover, assuming what any group of people might be talking or laughing about based on their ethnicity or profession would be a stereotype, which is not appropriate.
Asian nail technicians, like people of any other background, can have diverse conversations and topics of laughter. They could be talking about their families, friends, hobbies, interests, current events, or anything else that people typically chat about during work or social interactions. It's essential to recognize that individuals are unique and should not be generalized based on their ethnicity or profession.
If you interact with nail technicians or any other professionals from different backgrounds, it's best to treat them with respect and approach them as individuals, just like you would with anyone else. Engage in friendly conversation, but avoid making assumptions about their native language or the content of their discussions based on stereotypes.