ツ Katakana ツ: Remove the short vertical line in the middle of Chinese characters and write two points side by side on the left.
そ katakana ソ: Remove the middle point of the katakana above.
ん Katakana ン: Two points in Chinese
へ katakana ヘ: It is written in the same way as hiragana, hiragana is a soft fold, and katakana is an angular fold.