赫然
hè rán · HSK 7
with astonishment
🔥 赫 = 赤 + 赤 (double red, blazing); 然 = -ly suffix, so strikingly, awe-inspiringly
赫 stacks two 赤 (red) for a blazing, conspicuous brightness; 然 is the classical adverb ending. Together they describe something so striking it lands with a jolt: shockingly, impressively so.