Fans are known as their idol's fiercest protectors, no matter how simple the argument is about.

According to recent reports, Hallyu superstars Lee Min Ho and Kim Soo Hyun became the topic of a hot online debate regarding who is taller and has a smaller facial size.

Chinese clothing brand Semir was able to invite both actors to endorse their products, but tension happened when fans noticed the discrepancy between their promotional pictures in the brand, and the actors' actual measurements.

It was said that digitally manipulated pictures of Lee Min Ho and Kim Soo Hyun were put side by side in every store, showing that both actors had the same height and facial size.

Looking at the actors' profiles, Lee Min Ho's height is 187 centimeters, while Kim Soo Hyun's height is 180 centimeters. Lee Min Ho's fans felt offended that Kim Soo Hyun's height was exaggerated, but Kim Soo Hyun's fans debated that Lee Min Ho's face was purposely altered to look smaller.

Fans took to social media in disproving the other party wrong, resulting in an intense battle between the two groups.

Lee Min Ho and Kim Soo Hyun are two of the most popular Korean actors in China. Lee was made famous by his drama "The Heirs," while Kim became popular through "Man From The Stars."