Radical 101 or radical use () meaning "" is one of the 23 Kangxi radicals (214 radicals in total) composed of 5 strokes.
In the Kangxi Dictionary, there are 10 characters (out of 49,030) to be found under this radical.
Evolution
Derived characters Strokes Characters +0 +1 +2 +4 +7 (= -> 宀) Sinogram The radical is also used as an independent Chinese character. It is one of the kyōiku kanji or kanji taught in elementary school in Japan. It is a second grade kanji.
References
Literature