숭실대학교
However, negative views of the tunnel's profitability emerged the same year. Japanese Studies Professor Shin Jang-churl, of Seoul's Soongsil University, stated that the countries' political proposals were "...nothing but [empty] diplomatic rhetoric." Key issues for the tunnel would be its enormous construction cost combined with possible low profitability, similar to the Eurotunnel's financial situation since it opened in 1994.