Since no one gave any input to the above question, I did more study myself and came up the following understanding. When we read further of Cannon law, it is clear that the emphases are on** “properly disposed” , “Bishop’s approval” and “no general claim”. **
§2 Whenever necessity requires or a genuine spiritual advantage commends it, and provided the danger of error orindifferentism is avoided, Christ’s faithful for whom it is physically or morally impossible to approach a catholic minister,may lawfully receive the sacraments of penance, the Eucharist and anointing of the sick from non-catholic ministers in whose Churches these sacraments are valid.
§3 Catholic ministers may lawfully administer the sacraments of penance, the Eucharist and anointing of the sick tomembers of the eastern Churches not in full communion with the catholic Church, if they spontaneously ask for them and are properly disposed. The same applies to members of other Churches which the Apostolic See judges to be in the sameposition as the aforesaid eastern Churches so far as the sacraments are concerned.
§4 If there is a danger of death or if, in the judgement of the diocesan Bishop or of the Episcopal Conference, there is some other grave and pressing need, catholic ministers may lawfully administer these same sacraments to other christians not infull communion with the catholic Church, who cannot approach a minister of their own community and who spontaneouslyask for them, provided that they demonstrate the catholic faith in respect of these sacraments and are properly disposed.
§5 In respect of the cases dealt with in §§2, 3 and 4, the diocesan Bishop or the Episcopal Conference is not to issue general norms except after consultation with the competent authority, at least at the local level, of the non-catholic Churchor community concerned.
§2 talks about what Catholics are allowed to do with Non-Catholic ministers in emergency.
§3 is mainly pointing to eastern Churches.
§4 emphasizes on emergency situation for non-Catholic Christians.
§5 said all §2 §3 §4 must have Bishop’s approval and no general norms should be issued. What said in §5 apply to all §2, §3, and §4.
The person I tried to reason with on the Chinese website said “Protestants from some denominations can receive Eucharist” based on 844-3. That is obviously wrong. I have completed my response to him (or her) as above(in Chinese). However, that person still came back yelling and screaming, but that is no more my concern.
Thanks for your help and listening.