Ping wireless AP on LAN hotspot

I have a router setup with WAN and LAN.

WAN - 192.168.3.1
LAN - 192.168.2.1

The LAN has been setup hotspot.

I have 10 linksys APs on the LAN side in my building.

Since I am on the WAN side, are there anyway I can ping the 10 linksys APs from the WAN side because I want to monitor all the APs.

The APs is using ip 10.100.2.1. Since it is different ip range, can I ping it from the wan side using that ip address.

Ping will work with proper routing configuration.
You should have correct routing configuration on WAN router and on this HotSpot router, that will connect your network from WAN side to Linksys.

Can u show me how? Give me NAT example or something..

NAT should help you to redirect specific ports, e.g. it is possible to redirect Telnet, SSH, HTTP traffic to access the Linksys.
E.g. each router uses own port: 60000,60001, so on.
‘ip firewall nat add chain=dstnat dst-port=60000 protocol=tcp action=dst-nat to-address=linksys_1 to-ports=23’
Specify this port on Telnet client, then you should get linksys_1, the same for other routers.