This research examined the effects of overhearing an adult praise an unseen child for not needing to work hard on an academic task. Five-year-old Han Chinese children (total N = 270 across three studies; 135 boys, collected 2020-2021) who heard this low effort praise tended to devalue effort relative to a baseline condition in which the overheard conversation lacked evaluative content. In Study 3, low effort praise increased children's endorsement of essentialist beliefs about ability and their interest in becoming the kind of person who does not need to work hard to succeed. The findings show that overhearing evaluative comments about other people, a pervasive feature of daily life, can have a systematic effect on young children's beliefs about achievement.