Can I start doing business without Chinese and learn it later?
You certainly can, but you would be at a distinct disadvantage. In some cases, you will actually be barred from holding some high-level positions by not being perfectly functional in Chinese. As you might have read, “Goldman Sachs Group Inc, the world’s most profitable investment bank, couldn’t name the co-head of investment banking in Asia as chief executive officer of its Beijing joint venture because his knowledge of Chinese was too weak…” Don’t take my word for it!