I'd elaborate on the source, but I can't read Chinese.
Comment if there's more to say, because I'm not great at fuseki.
(;AW[cn]AW[kq]AW[qo]AW[pm]AW[qq]AW[rq]AB[qr]AB[rr]AB[pq]AB[op]AB[dp]AB[fq]LB[iq:A]LB[mq:B]C[A or B?]AP[goproblems]
(;B[mq];W[hq]C[The lower-right corner is strong and white is not yet comfortable.RIGHT])
(;B[iq];W[nq]C[The lower-right corner is weakened unnecessarily.])
(;B[al]C[[This path is here to make the board view identical as given in the book]]))