肆 Strokes Write it Listen 肆 sì to indulge; excess; four (bankers' anti-fraud numeral) HSK 7–9 13 strokes Radical 聿 Ideograph 2 words Built from镸chánglong; lasting; to excel in聿yùwriting brush, pencil; thereupon How it worksHaving long 镸 hair 聿.