You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <blocks>
      <block id="12" user="Wsx75333" by="濫用過濾器" timestamp="2016-04-26T13:14:12Z" expiry="infinity" reason="已由濫用過濾器自動封鎖。&#10;符合的規則描述為︰廣告過濾" nocreate="" autoblock="" allowusertalk="" />
      <block id="9" user="妍琳外送茶" by="Kejjang" timestamp="2016-04-26T11:43:55Z" expiry="infinity" reason="無禮的行為、攻擊／騷擾別人" nocreate="" autoblock="" />
      <block id="8" user="海倫外約網" by="Kejjang" timestamp="2016-04-26T11:43:46Z" expiry="infinity" reason="無禮的行為、攻擊／騷擾別人" nocreate="" autoblock="" />
      <block id="7" user="唐娜" by="Kejjang" timestamp="2016-04-26T11:42:58Z" expiry="infinity" reason="無禮的行為、攻擊／騷擾別人" nocreate="" autoblock="" />
      <block id="5" user="Hh85201" by="Kejjang" timestamp="2016-04-26T11:37:58Z" expiry="infinity" reason="無禮的行為、攻擊／騷擾別人" nocreate="" autoblock="" />
      <block id="3" user="海倫外送茶" by="Kejjang" timestamp="2016-04-18T03:39:41Z" expiry="infinity" reason="不能接受的使用者名" nocreate="" autoblock="" />
      <block id="1" user="海倫" by="Kejjang" timestamp="2016-04-18T03:38:57Z" expiry="infinity" reason="" nocreate="" autoblock="" />
    </blocks>
  </query>
</api>