I found some unnecessary network activities with Surge. Simply blocked them, the app works fine.
You can put the following lines into [Rule] section. Or use my conf file weibo.conf for a test.
DOMAIN-SUFFIX,wax.weibo.com,REJECT
DOMAIN-SUFFIX,mobile.sina.cn,REJECT
DOMAIN-SUFFIX,pingma.qq.com,REJECT
DOMAIN-SUFFIX,reachmax.cn,REJECT
DOMAIN-SUFFIX,miaozhen.com,REJECT
DOMAIN-SUFFIX,imrworldwide.com,REJECT
DOMAIN-SUFFIX,adashbc.m.taobao.com,REJECT
DOMAIN-SUFFIX,adashx.m.taobao.com,REJECT
DOMAIN-SUFFIX,nbsdk-baichuan.taobao.com,REJECT