I've been held down at FL236 (7,200m) flying up the coast of China through a typhoon. It was one of the smoothest flights I can ever recall doing.. not a ripple in the 'cruise' despite there being over 100kts of wind. At the destination one band of the typhoon was passing over with a spectacular thunderstorm so we just held for 20 mins until it blew away then there was no more than light turbulence and rain.