速通

速通	sù tōng	to get through sth quickly / (gaming) speedrun (abbr. for 快速通关)
速	sù	fast / rapid / quick / velocity
通	tōng	to go through / to know well / (suffix) expert / to connect / to communicate / open / to clear / classifier for letters, telegrams, phone calls etc
通	tòng	classifier for an activity, taken in its entirety (tirade of abuse, stint of music playing, bout of drinking etc)