Qǐng gàosù Xiǎo Lǐ lái wǒ nà'ér .
False: 请告诉小李来我那儿。
Qǐng gàosù Xiǎo Lǐ lái wǒ zhè‘ér .
True: 请告诉小李来我这儿。
远指和近指的混淆。“小李”的行为动作“来”是朝着说话人（“我”）进行的，距离说话人很近。应当用“这儿”。
The error lies in the confusion of two words of close and distant reference respectively. 那儿 refers to a location further away from the speaker while 这儿 refers to somewher around the speaker. The action 来 which is towards the speaker（我）brings 小李 close to 我. Thus 这儿 is the right word.
