Solutions:
1 stust cloud desktop
https://net.cc.stust.edu.tw/cloud/view

#vi /etc/rc.conf
#ifconfig_em0="DHCP" #note: nic of VM is vtnet0, not em0
ifconfig_vtnet0="DCHP" #this is right one

sed -i.bak 's/ifconfig_em0/ifconfig_vtnet0/g' /etc/rc.conf
reboot

login
ping 8.8.8.8 
Ctrl+c

pkg install -y sudo
pkg install -y zsh

pw useradd XXXXX -g wheel -s /usr/local/bin/zsh -m
passwd XXXXX

host (windows) connect to VM
ssh -p 2222 XXXXX@127.0.0.1

touch ~/.zshrc
exit
login again

vi

sync;sync; shutdown -h now