Iran, with two overage players, were the better team but their players lacked the cutting edge.
Earlier in the day, Vietnam started the Group campaign with a 4-2 win over Mongolia.
Iran are scheduled to meet Vietnam on Thursday, while Saudi Arabia face Mongolia.
There will be 40 sports and 61 disciplines taking place at the 54 competition venues in Hangzhou and the five co-host cities from Sept. 23 to Oct. 8.
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