DALLAS, May 3, 2014 (AFP) - Lee and Germany's Caroline Masson, who fired her second consecutive 67, topped the leaderboard on eight-under 134 after 36 holes at Las Colinas Country Club.
Americans Stacy Lewis and Natalie Gulbis shared third on 135 with compatriot Christina Kim another stroke adrift.
Norway's Suzann Pettersen, Paraguay's Julieta Granada, Dutchwoman Dewi Claire Schreefel and Americans Dori Carter and Cristie Kerr were next on 137.
Lee opened on the back nine with an eagle at the par-5 10th. After a bogey at 11, she fired back-to-back birdies before another befell her at 14.
She followed that with three birdies in a row before taking a bogey at 18, completing nine holes in four-under 31 without a single par.
Lee played her second nine without a bogey but ran off another birdie streak at the par-5 third, par-3 fourth and par-4 fifth, then parred the last four holes to claim her share of the lead.
Masson had less of a roller coaster round, with back-to-back birdies at the second and third and to open the back nine. She made her lone bogey at the eighth and closed with a birdie at the par-5 18th.
Leading scores after Friday's second round of the $1.3 million LPGA North Texas Shootout (USA unless noted, par-71):
134 - Meena Lee (KOR) 70-64, Caroline Masson (GER) 67-67
135 - Stacy Lewis 71-64, Natalie Gulbis 70-65
136 - Christina Kim 67-69
137 - Julieta Granada (PAR) 71-66, Dewi Claire Schrefel (NED) 71-66, Dori Carter 67-70, Cristie Kerr 67-70, Suzann Pettersen (NOR) 66-71
138 - Kim Kaufman 72-66, Azahara Munoz (ESP) 70-68, Moira Dunn 70-68, Felicity Johnson (ENG) 70-68, Pornanong Phatlum (THA) 70-68, Megan McChrystal 70-68, Thidapa Suwannapura (THA) 70-68, Katherine Kirk (AUS) 69-69, Jenny Shin (KOR) 69-69
139 - Park In-Bee (KOR) 71-68, Sarah Kemp (AUS) 71-68
140 - Tiffany Joh 74-68, Oh Ji-Young (KOR) 73-67, Haru Nomura (JPN) 70-70, Amelia Lewis 68-72, PK Kongkraphan (THA) 68-72, Michelle Wie 67-73