zhèng fǎn liǎng miàn
two-way
reversible
both sides of the coin
liǎng miàn sān dāo
two-faced, three knives (idiom); double-cross
double dealing and back stabbing
yī tǐ liǎng miàn
lit. one body two sides (idiom)
fig. a situation with two sides to it
liǎng miàn pài
two-faced person
double-dealing