@hashtagSELFIE
Looking into
Kukai, I think the first timestamp in this chapter listing when that confrontation took place is off by about 18 years. The 5 and the 3 were swapped in order. Kukai's recognized date of death is 22 April 835, according to Wikipedia, and I assume the start of this chapter takes place about a month before that since it says March. It would also line up with the last stated timestamp in the prior chapters, which was 793, since it says 'about 40 years later' alongside the month and year stated at the start of this current Chapter, as well. 793 plus about 40 would land about 833.
To reiterate... it should say 'March, 835 C.E.', not 'March, 853 C.E.' ...
Edit: Looks like right away, the next chapter confirms the date is wrong here, by saying,
"After the 15 years Mao spent meditating, Year 850" ... Do the math, and 15 years before 850 would be 835.