Of course Arabs had a profound impact on China, Turkmenistan, Afghanistan, etc... - a lot of Chinese land was lost to the Arabs as they carved up Persia. Actually, a lot of Persians fled to China during the Islamic Crusades. Many many Persian widows and orphans were welcomed by the Chinese Emperor and so settled there and became Chinese.Islam had a pretty profound effect on China....
http://en.wikipedia.org/wiki/Islam_in_China
And then the low count for Muslims in China is over 20 million.
Not that I am especially a fan of Islam. I haven't managed to read the Koran - or the whole Bible, or Ulysses by James Joyce, or Adam Smith's works, for that matter.)
At this point in history it was the Chinese traveling by sea to Egypt. Not Arabs traveling by sea to China. Who were the Chinese going to make a Temple for? An Arab they met in Syria who was never going to come to live in China? The overland trade route were garrisoned and maintained by the Persians - that is, the trade routes between China and Rome.??? Do you think Arabs and Chinese started trading only after Islam? Where did you learn history?
Why do you think the Chinese did not construct temples to pre-Islamic Arab faiths?
I already made a thread and linked it. Chinese Mosques. Educate yourself.
Intolerance of other people's faiths is a central plank of the Islam ideology. Just how many Hindu or Buddhist Temples exist in Mecca today? Let me guess SAM, the Arabs never met an Indian? Other than the million or so working as servants in the city.