Component 覀 xī cover/top radical, seen above characters Stroke order ▶ 覀 used in 5 characters HSK 1 要 yào important; significant HSK 2 票 piào a ticket, note, or slip used as a voucher or credential HSK 6 覆 fù to cover, to conceal HSK 7 潭 tán deep pool; deep pit; by extension: deep 贾 jiǎ a surname