From the Start, an Elementary Schooler: Invincible from Military Training

Elite soldier Liu Siqi transmigrates back to a military training competition for elementary school students. Though he was short and scrawny back then, he dazzles everyone and shocks the whole school.

Later, he wins the special forces competition and deploys to Southeast Asia to rescue hostages trapped there.

To completely wipe out the cross-border criminals, Liu Siqi goes undercover and joins a mercenary force, only to rise step by step until he becomes its leader!