goal he accomplished. However, some Korean officials lamented the loss of claims on areas north of the river and criticized Pak Kwon for not accompanying Mukedeng to the summit. The territorial claims stem from the territories held by Goguryeo and Balhae (see history section regarding the description of these two states). Nonetheless, the border remained uncontentious for the next 150 years. Cross-border movements were forbidden, and was punishable by death after trespassers were detained and repatriated back to their respective countries. In the 1870s the Qing government reversed its policy of prohibiting entry to Manchuria, and began allowing Han Chinese settlers into the territory in response to growing Russian encroachment. The area around Gando was opened up to settlement in 1881, but Chinese settlers quickly discovered some Korean farming communities already settled in the area. It was apparent that despite the decreed punishment, severe droughts in northern Korea had motivated Korean farmers to seek new lands. The Jilin general-governor Ming-An's official response was to lodge a protest to the Joseon government and offer to allow the Korean population to stay if they agreed to become Qing subjects and adopt Qing customs and dress. Joseon's response was to encourage the farmers not to register as Qing subjects but to return to Korea within the year. The farmers, unwilling to abandon their homes, argued that because of the ambiguity in the naming of the Tumen river, they were actually already in Korean territory. The Yalu River boundary is of little dispute, but the interpretation of the Tumen River boundary 土門 (토문) causes problems. The name of the river itself originates from the Jurchen word tumen, meaning "ten thousand". The official boundary agreement in 1712 identified the Tumen river using the characters 土門 (pinyin: Tǔmen) for the phonetic transcription. However, the modern Tumen River is written as 圖們 (pinyin: Túmen) in modern Chinese and as 豆滿 (두만) "Duman" in both modern Korean and Japanese. Some Koreans hence claim that the "Tumen" referred to in the treaty is actually a tributary of the Songhua River. Under this interpretation, Gando (where the Koreans settled) would be part of Korean territory. This confusion arises as the two names sound identical, and neither name is of Chinese origin. The two rivers can be seen in the following map from the period. Korean claims are based on maps showing the border river as 土門 and the claim that