How to write 通道通道

to go through; to know well; (suffix) expert; to connect; to communicate; open; to clear; classifier for letters, telegrams, phone calls etc

road; path; principle; truth; morality; reason; skill; method; Dao (of Daoism); to say; to speak; to talk; classifier for long thin things (rivers, cracks etc), barriers (walls, doors etc), questions (in an exam etc), commands, courses in a meal, steps in a process; (old) circuit (administrative division)