if Api:GetUserSkill(client,7020) then
  Api:SendMess(client,'你已經學過雷霆萬鈞這個技能了');
    return;
elseif Api:GetItemSdSkillLevel(client,480)>=4 then
    Api:RemoveItem_Cout(client,EqAip._InvItemCount);
   Api:AddUserSkill(client,7020,0,0);
  Api:SendMess(client,'恭喜你學會了雷霆萬鈞這個技能');
    return;
else
Api:SendMess(client,'你的短棒技能的熟練度不夠,不能學習這個技能');
    return;  
end;