Kanji

💡 Break 煩 down and you get 火 (fire) — a fire with sparks flying off to both sides, and beside it 頁 (head / page) — a head bent over a page. Picture a flame burning, put 煩 inside it, and let that scene stand for "trouble" — trouble / annoy. The odder the picture, the better it sticks.

💡 Break 爆 down and you get 火 (fire) — a fire with sparks flying off to both sides. Picture a flame burning, put 爆 inside it, and let that scene stand for "explode" — explode. The odder the picture, the better it sticks.

💡 Break 迅 down and you get ⻌ (road / movement) — a road running along the bottom of the character. Picture a pedestrian crossing marked with painted stripes, put 迅 inside it, and let that scene stand for "rapid" — rapid. The odder the picture, the better it sticks.

💡 Picture an open mouth: that is what 辣 means — bitter / harsh. Now find the part that anchors it in the character itself, 辛 (bitter / spicy) — a blade point balanced upright, sharp enough to sting the tongue, and beside it 束 (bundle / bind) — branches tied at the middle. Drop that part into the picture and the shape stops being something separate to memorise.

💡 Break 迂 down and you get 辶 (road / movement) — a road sweeping under the character. Picture a road disappearing through a tunnel cut into a hillside, put 迂 inside it, and let that scene stand for "detour" — detour / roundabout. The odder the picture, the better it sticks.