Sina.com.cn does not parses registration date#19

It cannot parse registration date for this domain I suspect other domains ending with .cn have same fate , although a cli WHOIS , shows registration date and in the below output you can see it in the 'raw' value but parser cannot find and only shows expiry date ! input: w = pythonwhois.get_whois("sina.com.cn") pprint.pprint(w) output: {'contacts': {'admin': None, 'billing': None, 'registrant': None, 'tech': None}, 'emails': ['[email protected]'], 'expiration_date': [datetime.datetime(2019, 12, 4, 9, 32, 35)], 'nameservers': ['ns3.sina.com.cn', 'ns2.sina.com.cn', 'ns4.sina.com.cn', 'ns1.sina.com.cn'], 'raw': ['Domain Name: sina.com.cn\nROID: 20021209s10011s00082127-cn\nDomain Status: clientDeleteProhibited\nDomain Status: serverDeleteProhibited\nDomain Status: clientUpdateProhibited\nDomain Status: serverUpdateProhibited\nDomain Status: clientTransferProhibited\nDomain Status: serverTransferProhibited\nRegistrant ID: sinacomcn2\nRegistrant: \xe5\x8c\x97\xe4\xba\xac\xe6\x96\xb0\xe6\xb5\xaa\xe4\xba\x92\xe8\x81\x94\xe4\xbf\xa1\xe6\x81\xaf\xe6\x9c\x8d\xe5\x8a\xa1\xe6\x9c\x89\xe9\x99\x90\xe5\x85\xac\xe5\x8f\xb8\nRegistrant Contact Email: [email protected]\nSponsoring Registrar: \xe5\x8c\x97\xe4\xba\xac\xe6\x96\xb0\xe7\xbd\x91\xe6\x95\xb0\xe7\xa0\x81\xe4\xbf\xa1\xe6\x81\xaf\xe6\x8a\x80\xe6\x9c\xaf\xe6\x9c\x89\xe9\x99\x90\xe5\x85\xac\xe5\x8f\xb8\nName Server: ns3.sina.com.cn\nName Server: ns2.sina.com.cn\nName Server: ns4.sina.com.cn\nName Server: ns1.sina.com.cn\nRegistration Date: 1998-11-20 00:00:00\nExpiration Date: 2019-12-04 09:32:35\nDNSSEC: unsigned\n'], 'registrar': ['\xe5\x8c\x97\xe4\xba\xac\xe6\x96\xb0\xe7\xbd\x91\xe6\x95\xb0\xe7\xa0\x81\xe4\xbf\xa1\xe6\x81\xaf\xe6\x8a\x80\xe6\x9c\xaf\xe6\x9c\x89\xe9\x99\x90\xe5\x85\xac\xe5\x8f\xb8'], 'status': ['clientDeleteProhibited', 'serverDeleteProhibited', 'clientUpdateProhibited', 'serverUpdateProhibited', 'clientTransferProhibited', 'serverTransferProhibited']}