The moÌ?bius strip -- Knifeblade -- Space travel -- A little ball launched by a dwarf -- On the footbridge -- Orbital rotation -- City of machines -- The cost of living for a family of UÌ?ngang laborers -- The fault lies with god as well -- The klein bottle -- The spinyfish entering my net -- Epilogue -- Afterword: Cho Se-huÌ?i and The Dwarf.