@ehsan230564 , As @Nash suggested, VPN subnet translation could be an option here. Also, one more thing that might work for you is to configure a full tunnel VPN from the spokes to their Hubs. Since the two hubs will exchanges routes between them, as long as you are configuring full tunnel between from spokes connected behind the hubs, all the spokes should be able to reach that subnet no matter behind which hub that subnet resides.
Cheers!
Raj
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