Since the top of a small brush is especially delicate, it is better to avoid brushing it against the riku (a part of the ink slab used to grind an ink stick) in order to set the top as much as possible.
小筆の穂先は特に繊細なため、陸（墨を磨る部分）で穂先をまとめるために強くこすりつけることは極力避ける。