Ka kammala wannan magana: A farkon shekara ta 1857, labarai daga ƙasar Sin sun kai Biritaniya cewa
wani fashewa tsakanin wakilin Birtaniya a wannan kasa da gwamnan lardin Canton dangane da wani karamin jirgi ko lorcha da ake kira "Arrow", wanda ya haifar da admiral na Birtaniya ya hallaka kogin kogin, ya ƙone jirgi 23 na sojojin ruwa na kasar Sin da kuma bombarding birnin Canton. Bayan bincike mai kyau na takardun hukuma, Cobden ya tabbata cewa waɗannan ba daidai ba ne. Ya gabatar da wani motsi a majalisa a wannan ma'anar, wanda ya haifar da doguwar muhawara, wanda ya wuce dare hudu, wanda Sidney Herbert, Sir James Graham, William Gladstone, Lord John Russell da Benjamin Disraeli suka goyi bayan shi, kuma wanda ya ƙare a nasarar da aka yi wa Lord Palmerston da yawancin mutane goma sha shida.