Many thanks to @ar4uall
1. I set Pfsense as the gateway for wi-fi clients, it still have problems
if captive portal set on WAN interface, then all wi-fi clients cannot access internet
if I set Captive portal on Vlan Wi-fi (talk later), then nothing happens, clients can access internet
2. The network is real in my company, and I'm testing pfsense.
The network have Vlan 111 for wi-fi, and others vlan for office. I can't access the multilayer switch and router…
3. My PC doesn't have PCI slot, so I can't plug in NIC :(