Usually, clients access the web1 by web1.king.com and web2.prince.king.com.

How about to use the shortname: www for web1.king.com and www2 for web2.prince.king.com?

At OCS1domain controller:

dnscmd . /zoneadd GLobalNames /DsPrimary /DP /forest

dnscmd . /config /EnableGlobalNamesSupport 1

dnscmd . /RecordAdd GlobalNames www CName ocs1.king.com

dnscmd . /RecordAdd GlobalNames www2 CName ocs2.prince.king.com

After replication, all clients can access the two web servers with the shortnames www and www2.