Hello, I agree with Professor LuQin's point. Pls kindly consider the following words in section 2.6 of RFC5892(for IDNA ) 2.6<https://tools.ietf.org/html/rfc5892#section-2.6>. Exceptions (F) F: cp is in {00B7, 00DF, 0375, 03C2, 05F3, 05F4, 0640, 0660, 0661, 0662, 0663, 0664, 0665, 0666, 0667, 0668, 0669, 06F0, 06F1, 06F2, 06F3, 06F4, 06F5, 06F6, 06F7, 06F8, 06F9, 06FD, 06FE, 07FA, 0F0B, 3007, 302E, 302F, 3031, 3032, 3033, 3034, 3035, 303B, 30FB} This category explicitly lists code points for which the category cannot be assigned using only the core property values that exist in the Unicode standard. The values are according to the table below: PVALID -- Would otherwise have been DISALLOWED 00DF; PVALID # LATIN SMALL LETTER SHARP S 03C2; PVALID # GREEK SMALL LETTER FINAL SIGMA 06FD; PVALID # ARABIC SIGN SINDHI AMPERSAND 06FE; PVALID # ARABIC SIGN SINDHI POSTPOSITION MEN 0F0B; PVALID # TIBETAN MARK INTERSYLLABIC TSHEG 3007; PVALID # IDEOGRAPHIC NUMBER ZERO It means that U+3007 is only allowed as the number zero, otherwise it will not allowed in use in IDNA protocols. �� can be used to express many meanings besides the number zero, but �� can be only used as the number zero In IDNA. �� is a special code point in IDNA while �� is a normal code point. so it may be not proper that �� is regarded as a variant to �� based on IDNA protocols. Best Regards ________________________________ Jiankang Yao �����ˣ� csluqin@comp.polyu.edu.hk<mailto:csluqin@comp.polyu.edu.hk> ����ʱ�䣺 2017-06-07 13:50 �ռ��ˣ� '��ΰ'<mailto:wangwei@cnic.cn>; bjlgy@bnu.edu.cn<mailto:bjlgy@bnu.edu.cn>; 'Zhang Zhoucai'<mailto:joe.zhang@unihan.com.cn> ���ͣ� ChineseGP@icann.org<mailto:ChineseGP@icann.org> ���⣺ [ChineseGP]RE: question about �� and �� Dear Wang Wei, What is the U code of this Japanese? I think U+3007 being considered the simplified form of �� is a good one, simply consider it as variant is not as good. But, U+3007 is considered a CJK symbol, not a CJK ideograph. Best regards, LuQin From: ��ΰ [mailto:wangwei@cnic.cn] Sent: Monday, 5 June 2017 1:48 PM To: 'Qin Lu' <csluqin@comp.polyu.edu.hk>; bjlgy@bnu.edu.cn; 'Zhang Zhoucai' <joe.zhang@unihan.com.cn> Cc: ChineseGP@icann.org Subject: question about �� and �� Dear Prof. Lu, Prof. Li and Prof. Zhang ��½��ʦ������ʦ������ʦ JGP provided its latest repertoire in which a new character �� was added. do you think �� should be an independent character, or, a variant to �� �� �����µ��ձ��ּ���������ַ������� ������Ϊ���Ƿ�Ӧ��Ϊ������壬���Ƕ������֣� Looking forward to your suggestion Regards WANG Wei