Here is a 1917 Zhongguo censored red band cover to my city Kolkata.
The Indian markings are:
1. Baker type CH5 PASSED CENSOR 3
is the censor's chop number) of Kolkata Censor Station in violet
2. Baker type CH4 POSTAL CENSOR DES.
dispatch datestamp dt. Jul 26,1917 of Kolkata CS
3. Barabazar SPO delivery postmark dt. Jul 27,1917 (7 a.m.)
4. Kolkata GPO D.B.N. datestamp dt. Jul 28,1917
5. Kolkata Dead Letter Office rectangular postmark dt. Jul 31,1917 (redirected PO delivery mark is indistinct beside the stamp)
The basic surface mail rate from Zhongguo to India was 10c for first 20gm or part from Aug 5,1910 to Jan 6,1930, which was paid by Zhongguo 1913 10c SG 277.