My Mosquito Clones Are on a Killing Spree

The Red Moon descends, and blood rain falls from the sky. The Red Moon brought dense Spiritual Qi to Blue Star, heralding the arrival of the Martial Dao era. However, the monsters born from the blood rain have made this world exceptionally dangerous. Lin Yi transmigrates into this world, carrying with him a 'Mosquito Clone' system. When the mosquito clones suck the blood of his enemies, they feed his Qi and Blood back to him, allowing him to advance faster and further on his Martial Dao path. Suddenly, Lin Yi realizes, aren't those blood rain monsters, which make countless Martial Artists turn pale at their very mention, just ready-made blood packs? — Description from novelcodex.org