Heaven-Slaying Divine Brush Art

After transmigrating, he thought he would be like all the others: rise from a nobody to a legend, face-slap the geniuses, and soar to the top. Instead, Ma Lang found himself born unable to cultivate, a genuine good-for-nothing. But when he took a Marrow-Cleansing Pill and managed to open a tiny passage in his blocked meridians, a wolf-hair brush suddenly appeared! No matter how many elixirs and treasures you have, they can't compare to my one brush! Just watch as I paint you heaven-defying pills, invincible divine weapons, and Heaven-tier cultivation techniques!