Chinese expression "The grass is always greener on the other side"

外国的月亮比较圆

Wàiguó de yuèliàng bǐjiào yuán

Lit. The moon in foreign countries is rounder
Equivalent to “The grass is always greener on the other side”

Lit. La luna en el extranjero es mas redonda

Equivalente a “Las manzanas siempre parecen mejores en el huerto del vecino”