First of all, according to your description, this bug looks like a centipede, which may be a kind of scutiger. Scooters generally live in dark and humid places, such as basements, bathrooms, toilets, etc., and are also common in crevices, woodpiles and dead leaves in rural areas. This kind of bug crawls faster and can crawl quickly on the surfaces of leaves, walls and other objects. Another feature of the scutiger is that when it is threatened, it will release an odor to defend itself.
Secondly, if the worm you provide has other characteristics, such as appearing in wheat flour or rice in summer, then it may be a kind of Mi Chong. Mi Chong is one of the main pests in cereals. Their adults have small heads, long narrow mouths and thick beaks. Larvae eat the inside of the grain, while adults eat the outside. This worm is usually parasitic on grain particles in the form of eggs, which is difficult to remove.
Please provide more detailed descriptions or photos so that I can provide you with more accurate answers.