Tianjin government has put plaques on many distinguished old buildings, but the plaques are painfully uninformative. Even the year of construction is never stated! All you can find from looking at them is whether the building is under the "ordinary protection" or "very important protection". Jesuit Mission got the "ordinary".
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/77944213@N00">Katya Knyazeva</a>
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<a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a>: <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/77944213@N00/5292204624">Jesuit Mission 崇德堂 in Tianjin</a>